Kimball kenneth (28 Ergebnisse)
- Hardcover
Anbieter: Phatpocket Limited, Waltham Abbey, HERTS, Vereinigtes KönigreichPhatpocket Limited
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Gebraucht - Befriedigend
EUR 3,91
EUR 12,42 VersandVersand von Vereinigtes Königreich nach USAAnzahl: 1 verfügbar
Zustand: Good. Your purchase helps support Sri Lankan Children's Charity 'The Rainbow Centre'. Ex-library, so some stamps and wear, but in good overall condition. Our donations to The Rainbow Centre have helped provide an education and a safe haven to hundreds of children who live in appalling conditions.
- Hardcover
Anbieter: -OnTimeBooks-, Phoenix, AZ, USA-OnTimeBooks-
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Gebraucht - Befriedigend
EUR 18,23
Versand gratisVersand innerhalb von USAAnzahl: 1 verfügbar
Zustand: good. A copy that has been read, remains in good condition. All pages are intact, and the cover is intact. The spine and cover show signs of wear. Pages can include notes and highlighting and show signs of wear, and the copy can include "From the library of" labels or previous owner inscriptions. 100% GUARANTEE! Shipped… with delivery confirmation, if you're not satisfied with purchase please return item! Ships via media mail.
Ecotoxicology: Problems and Approaches
Simon A. Levin, Mark A. Harwell, John R. Kelly et Kenneth D. Kimball
- Hardcover
Anbieter: Ammareal, Morangis, FrankreichAmmareal
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Gebraucht - Gut bis sehr gut
EUR 3,50
EUR 16,50 VersandVersand von Frankreich nach USAAnzahl: 1 verfügbar
Hardcover. Zustand: Bon. Ancien livre de bibliothèque. Edition 1989. Ammareal reverse jusqu'à 15% du prix net de cet article à des organisations caritatives. ENGLISH DESCRIPTION Book Condition: Used, Good. Former library book. Edition 1989. Ammareal gives back up to 15% of this item's net price to charity organizations.
Poetry Kanto No.2 Summer 1985
[Levertov, Denise]; Arthur G. Kimball, Thomas Fitzsimmons, Chris Drake, Vern Rutsala, Shuntaro Tanikawa, William I. Elliott, Libby A. Durbin, Kenneth O. Hanson
Verlag: Kanto Poetry Center, No Place, 1985
- Softcover
Anbieter: Daedalus Books, Portland, OR, USADaedalus Books
Verkäufer/-in kontaktierenVerkäufer/-in mit 4 SternenVerbandsmitglied: CBA
Zustand: Gebraucht - Gut
EUR 6,62
EUR 5,56 VersandVersand innerhalb von USAAnzahl: 1 verfügbar
In den WarenkorbStapled wraps. Zustand: Very Good. Text in Japanese and English. ; 8vo ; 56 pages.
- Hardcover
- Erstausgabe
Anbieter: Better World Books, Mishawaka, IN, USABetter World Books
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Gebraucht - Befriedigend
EUR 23,20
Versand gratisVersand innerhalb von USAAnzahl: 1 verfügbar
Zustand: Good. 1st Edition. Former library copy. Pages intact with minimal writing/highlighting. The binding may be loose and creased. Dust jackets/supplements are not included. Includes library markings. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.
Verlag: Scholastic Publishing Co., 1929
- Hardcover
Anbieter: North Country Books, Milton, VT, USANorth Country Books
Verkäufer/-in kontaktierenVerkäufer/-in mit 3 SternenZustand: Gebraucht - Gut
EUR 15,87
EUR 5,09 VersandVersand innerhalb von USAAnzahl: 1 verfügbar
In den WarenkorbHardcover. Zustand: Very Good. Hardcover with general wear, no major faults, clean, tightly bound and unmarked. No dust jacket.
Young Voices : A Quarter Century of High School Student Writing Selected from the Scholastic Awards
Gould, Kenneth M.; and Joan Coyne (edited by); Foreword by Dorothy Canfield Fisher [Kimball Flaccus]
Verlag: Harper & Brothers, New York, 1945
- Hardcover
- Erstausgabe
Anbieter: About Books, Henderson, NV, USAAbout Books
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Gebraucht
EUR 30,81
EUR 5,95 VersandVersand innerhalb von USAAnzahl: 1 verfügbar
In den WarenkorbHardcover. Zustand: Very Good+ condition. Very Good Dust Jacket. First Edition (so stated). New York: Harper & Brothers, 1945. Square, tight copy. Dust Jacket is NOT price clipped (3.00). Some light brown spots (foxing) on white parts of the mostly green Jacket, and on the endpapers only. Text pages are clean, fresh, and crisp,…with NO foxing. No owner's name or bookplate. No underlining. No highlighting. No margin notes. Anthology of short stories, verse, and essays written from 1926 -1945, by high school students (ages 14-19), including several poems by Kimball Flaccus. Index. "First Edition" is so stated on the copyright page. Bound in the original black cloth, decorated in shades of green. . First Edition (so stated). Hard Cover. Very Good+ condition./Very Good Dust Jacket. 8vo. xxvii, 401pp. .
- Hardcover
- Erstausgabe
Anbieter: COLLINS BOOKS, Seattle, WA, USACOLLINS BOOKS
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenVerbandsmitglied: CBA
Zustand: Gebraucht - Befriedigend
EUR 61,70
EUR 5,98 VersandVersand innerhalb von USAAnzahl: 1 verfügbar
HARDCOVER. Zustand: Good. 1st edition. 547pp, octavo, tight binding, clean throughout, front cover is bowed at the right edge, clea boards.
- Softcover
- Print-on-Demand
Anbieter: Forgotten Books, London, Vereinigtes KönigreichForgotten Books
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Neu
EUR 16,49
Versand gratisVersand von Vereinigtes Königreich nach USAAnzahl: Mehr als 20 verfügbar
Paperback. Zustand: New. Print on Demand. This book delves into the history of a small rural community in New Hampshire, Landaff, tracking its growth and evolution from its initial founding in the 1700s to the present day. By examining the challenges and triumphs faced by its inhabitants, the author explores how the region, repr…esentative of many such communities across the United States, has changed over time. The book places particular emphasis on the impact of commercialization and industrialization on Landaff, tracing the consequences of the shift from self-sufficiency to a cash economy and the subsequent out-migration of young people seeking opportunities elsewhere. The text also analyzes the role of immigration in shaping the community's identity, examining the arrival of non-Yankee and non-farm families. Throughout, the book provides a nuanced and insightful examination of the complex interplay between economic, social, and cultural forces in shaping the character of rural America. It offers a valuable perspective on the historical context that has influenced the present-day circumstances of many similar communities, shedding light on the factors that have shaped their identity and resilience. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.
- Softcover
Anbieter: Ria Christie Collections, Uxbridge, Vereinigtes KönigreichRia Christie Collections
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Neu
EUR 61,07
EUR 13,98 VersandVersand von Vereinigtes Königreich nach USAAnzahl: Mehr als 20 verfügbar
Zustand: New. In.
- Softcover
Anbieter: Chiron Media, Wallingford, Vereinigtes KönigreichChiron Media
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Neu
EUR 57,73
EUR 18,08 VersandVersand von Vereinigtes Königreich nach USAAnzahl: 10 verfügbar
Paperback. Zustand: New.
- Softcover
Anbieter: Books Puddle, New York, NY, USABooks Puddle
Verkäufer/-in kontaktierenVerkäufer/-in mit 4 SternenZustand: Neu
EUR 82,85
EUR 3,41 VersandVersand innerhalb von USAAnzahl: 4 verfügbar
Zustand: New. pp. 564.
Ecotoxicology: Problems and Approaches (Springer Advanced Texts in Life Sciences)
Levin, Simon A. (Editor) / Harwell, Mark A. (Editor) / Kelly, John R. (Editor) / Kimball, Kenneth D. (Editor)
- Softcover
Anbieter: Revaluation Books, Exeter, Vereinigtes KönigreichRevaluation Books
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Neu
EUR 82,28
EUR 14,59 VersandVersand von Vereinigtes Königreich nach USAAnzahl: 2 verfügbar
Paperback. Zustand: Brand New. reprint edition. 547 pages. 9.00x6.00x1.25 inches. In Stock.
Ecotoxicology: Problems and Approaches
Levin, Simon A.|Harwell, Mark A.|Kelly, John R.|Kimball, Kenneth D.
- Softcover
Anbieter: moluna, Greven, Deutschlandmoluna
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Neu
EUR 48,37
EUR 48,99 VersandVersand von Deutschland nach USAAnzahl: Mehr als 20 verfügbar
Zustand: New.
- Softcover
Anbieter: AHA-BUCH GmbH, Einbeck, DeutschlandAHA-BUCH GmbH
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Neu
EUR 53,49
EUR 64,22 VersandVersand von Deutschland nach USAAnzahl: 1 verfügbar
Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - Ecotoxicology is the science that seeks to predict the impacts of chemi cals upon ecosystems. This involves describing and predicting ecological changes ensuing from a variety of human activities that involve release of xenobiotic and other chemicals… to the environment. A fundamental principle of ecotoxicology is embodied in the notion of change. Ecosystems themselves are constantly changing due to natural processes, and it is a challenge to distinguish the effects of anthropogenic activities against this background of fluctuations in the natural world. With the frustratingly large, diverse, and ever-emerging sphere of envi ronmental problems that ecotoxicology must address, the approaches to individual problems also must vary. In part, as a consequence, there is no established protocol for application of the science to environmental prob lem-solving. The conceptual and methodological bases for ecotoxicology are, how ever, in their infancy, and thus still growing with new experiences. In deed, the only robust generalization for research on different ecosystems and different chemical stresses seems to be a recognition of the necessity of an ecosystem perspective as focus for assessment. This ecosystem basis for ecotoxicology was the major theme of a previous pUblication by the Ecosystems Research Center at Cornell University, a special issue of Environmental Management (Levin et al. 1984). With that effort, we also recognized an additional necessity: there should be a continued develop ment of methods and expanded recognition of issues for ecotoxicology and for the associated endeavor of environmental management.
- Softcover
Anbieter: Mispah books, Redhill, SURRE, Vereinigtes KönigreichMispah books
Verkäufer/-in kontaktierenVerkäufer/-in mit 4 SternenZustand: Gebraucht - Wie neu
EUR 117,83
EUR 29,18 VersandVersand von Vereinigtes Königreich nach USAAnzahl: 1 verfügbar
Paperback. Zustand: Like New. LIKE NEW. SHIPS FROM MULTIPLE LOCATIONS. book.
Preparing School Leaders for the 21st Century : An International Comparison of Development Programs in 15 Countries
Huber, Stephan Gerhard; Chirichello, Michael (CON); Chrispeels, Janet (CON); Cuttance, Peter (CON); Gopinathan, S. (CON); Imants, Jeroen (CON); Johansson, Olof (CON); Kimball, Kathy (CON); Leithwood, Kenneth (CON); Meuret, Denis (CON); Moos, Leif (CON); Robertson, Jan (CON); Rosenbusch, Heinz (CON)
- Hardcover
Anbieter: GreatBookPrices, Columbia, MD, USAGreatBookPrices
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Neu
EUR 276,53
EUR 2,26 VersandVersand innerhalb von USAAnzahl: 10 verfügbar
Zustand: New.
Preparing School Leaders for the 21st Century : An International Comparison of Development Programs in 15 Countries
Huber, Stephan Gerhard; Chirichello, Michael (CON); Chrispeels, Janet (CON); Cuttance, Peter (CON); Gopinathan, S. (CON); Imants, Jeroen (CON); Johansson, Olof (CON); Kimball, Kathy (CON); Leithwood, Kenneth (CON); Meuret, Denis (CON); Moos, Leif (CON); Robertson, Jan (CON); Rosenbusch, Heinz (CON)
- Hardcover
Anbieter: GreatBookPricesUK, Woodford Green, Vereinigtes KönigreichGreatBookPricesUK
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Neu
EUR 283,12
EUR 17,51 VersandVersand von Vereinigtes Königreich nach USAAnzahl: 10 verfügbar
Zustand: New.
Preparing School Leaders for the 21st Century : An International Comparison of Development Programs in 15 Countries
Huber, Stephan Gerhard; Chirichello, Michael (CON); Chrispeels, Janet (CON); Cuttance, Peter (CON); Gopinathan, S. (CON); Imants, Jeroen (CON); Johansson, Olof (CON); Kimball, Kathy (CON); Leithwood, Kenneth (CON); Meuret, Denis (CON); Moos, Leif (CON); Robertson, Jan (CON); Rosenbusch, Heinz (CON)
- Hardcover
Anbieter: GreatBookPricesUK, Woodford Green, Vereinigtes KönigreichGreatBookPricesUK
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Gebraucht - Wie neu
EUR 397,95
EUR 17,51 VersandVersand von Vereinigtes Königreich nach USAAnzahl: 10 verfügbar
Zustand: As New. Unread book in perfect condition.
Preparing School Leaders for the 21st Century : An International Comparison of Development Programs in 15 Countries
Huber, Stephan Gerhard; Chirichello, Michael (CON); Chrispeels, Janet (CON); Cuttance, Peter (CON); Gopinathan, S. (CON); Imants, Jeroen (CON); Johansson, Olof (CON); Kimball, Kathy (CON); Leithwood, Kenneth (CON); Meuret, Denis (CON); Moos, Leif (CON); Robertson, Jan (CON); Rosenbusch, Heinz (CON)
- Hardcover
Anbieter: GreatBookPrices, Columbia, MD, USAGreatBookPrices
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Gebraucht - Wie neu
EUR 427,78
EUR 2,26 VersandVersand innerhalb von USAAnzahl: 10 verfügbar
Zustand: As New. Unread book in perfect condition.
- Softcover
- Print-on-Demand
Anbieter: Brook Bookstore On Demand, Napoli, NA, ItalienBrook Bookstore On Demand
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Neu
EUR 46,22
EUR 8,00 VersandVersand von Italien nach USAAnzahl: Mehr als 20 verfügbar
Zustand: new. Questo è un articolo print on demand.
Weitere Bilder- Hardcover
- Print-on-Demand
Anbieter: Gyan Books Pvt. Ltd., Delhi, IndienGyan Books Pvt. Ltd.
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Neu
EUR 33,79
Versand gratisVersand von Indien nach USAAnzahl: Mehr als 20 verfügbar
In den WarenkorbLeather Bound. Zustand: New. Language: English. Language: English. Presenting an Exquisite Leather-Bound Edition, expertly crafted with Original Natural Leather that gracefully adorns the spine and corners. The allure continues with Golden Leaf Printing that adds a touch of elegance, while Hand Embossing on the rounded spine len…ds an artistic flair. This masterpiece has been meticulously reprinted in 2025, utilizing the invaluable guidance of the original edition published many years ago in 1942. The contents of this book are presented in classic black and white. Its durability is ensured through a meticulous sewing binding technique, enhancing its longevity. Imprinted on top-tier quality paper. A team of professionals has expertly processed each page, delicately preserving its content without alteration. Due to the vintage nature of these books, every page has been manually restored for legibility. However, in certain instances, occasional blurriness, missing segments, or faint black spots might persist. We sincerely hope for your understanding of the challenges we faced with these books. Recognizing their significance for readers seeking insight into our historical treasure, we've diligently restored and reissued them. Our intention is to offer this valuable resource once again. We eagerly await your feedback, hoping that you'll find it appealing and will generously share your thoughts and recommendations. Lang: - English, Vol:- Volume no.3, Pages:- 130, Print on Demand. If it is a multi-volume set, then it is only a single volume. We are specialised in Customisation of books, if you wish to opt different color leather binding, you may contact us. This service is chargeable. Product Disclaimer: Kindly be informed that, owing to the inherent nature of leather as a natural material, minor discolorations or textural variations may be perceptible. Explore the FOLIO EDITION (12x19 Inches): Available Upon Request. Volume no.3 130 130.
Weitere BilderThe golden age 1895 [Leather Bound]
Grahame, Kenneth,Stone and Kimball Collection (Library of Congress) DLC
- Hardcover
- Print-on-Demand
Anbieter: Gyan Books Pvt. Ltd., Delhi, IndienGyan Books Pvt. Ltd.
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Neu
EUR 34,50
Versand gratisVersand von Indien nach USAAnzahl: Mehr als 20 verfügbar
In den WarenkorbLeather Bound. Zustand: New. Language: English. Language: English. Presenting an Exquisite Leather-Bound Edition, expertly crafted with Original Natural Leather that gracefully adorns the spine and corners. The allure continues with Golden Leaf Printing that adds a touch of elegance, while Hand Embossing on the rounded spine len…ds an artistic flair. This masterpiece has been meticulously reprinted in 2024, utilizing the invaluable guidance of the original edition published many years ago in 1895. The contents of this book are presented in classic black and white. Its durability is ensured through a meticulous sewing binding technique, enhancing its longevity. Imprinted on top-tier quality paper. A team of professionals has expertly processed each page, delicately preserving its content without alteration. Due to the vintage nature of these books, every page has been manually restored for legibility. However, in certain instances, occasional blurriness, missing segments, or faint black spots might persist. We sincerely hope for your understanding of the challenges we faced with these books. Recognizing their significance for readers seeking insight into our historical treasure, we've diligently restored and reissued them. Our intention is to offer this valuable resource once again. We eagerly await your feedback, hoping that you'll find it appealing and will generously share your thoughts and recommendations. Lang: - English, Pages: : - 258, Print on Demand. If it is a multi-volume set, then it is only a single volume. We are specialised in Customisation of books, if you wish to opt different color leather binding, you may contact us. This service is chargeable. Product Disclaimer: Kindly be informed that, owing to the inherent nature of leather as a natural material, minor discolorations or textural variations may be perceptible. Explore the FOLIO EDITION (12x19 Inches): Available Upon Request. 258 258.
Weitere Bilder- Hardcover
- Print-on-Demand
Anbieter: Gyan Books Pvt. Ltd., Delhi, IndienGyan Books Pvt. Ltd.
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Neu
EUR 34,54
Versand gratisVersand von Indien nach USAAnzahl: Mehr als 20 verfügbar
In den WarenkorbLeather Bound. Zustand: New. Language: English. Language: English. Presenting an Exquisite Leather-Bound Edition, expertly crafted with Original Natural Leather that gracefully adorns the spine and corners. The allure continues with Golden Leaf Printing that adds a touch of elegance, while Hand Embossing on the rounded spine len…ds an artistic flair. This masterpiece has been meticulously reprinted in 2024, utilizing the invaluable guidance of the original edition published many years ago in 1895. The contents of this book are presented in classic black and white. Its durability is ensured through a meticulous sewing binding technique, enhancing its longevity. Imprinted on top-tier quality paper. A team of professionals has expertly processed each page, delicately preserving its content without alteration. Due to the vintage nature of these books, every page has been manually restored for legibility. However, in certain instances, occasional blurriness, missing segments, or faint black spots might persist. We sincerely hope for your understanding of the challenges we faced with these books. Recognizing their significance for readers seeking insight into our historical treasure, we've diligently restored and reissued them. Our intention is to offer this valuable resource once again. We eagerly await your feedback, hoping that you'll find it appealing and will generously share your thoughts and recommendations. Lang: - English, Pages: : - 264, Print on Demand. If it is a multi-volume set, then it is only a single volume. We are specialised in Customisation of books, if you wish to opt different color leather binding, you may contact us. This service is chargeable. Product Disclaimer: Kindly be informed that, owing to the inherent nature of leather as a natural material, minor discolorations or textural variations may be perceptible. Explore the FOLIO EDITION (12x19 Inches): Available Upon Request. 264 264.
- Softcover
- Print-on-Demand
Anbieter: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, DeutschlandBuchWeltWeit Ludwig Meier e.K.
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Neu
EUR 53,49
EUR 23,00 VersandVersand von Deutschland nach USAAnzahl: 2 verfügbar
Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Ecotoxicology is the science that seeks to predict the impacts of chemi cals upon ecosystems. This involves describing and predicting ecological changes ensuing from a variety of human activities that involve release of xenobiotic and… other chemicals to the environment. A fundamental principle of ecotoxicology is embodied in the notion of change. Ecosystems themselves are constantly changing due to natural processes, and it is a challenge to distinguish the effects of anthropogenic activities against this background of fluctuations in the natural world. With the frustratingly large, diverse, and ever-emerging sphere of envi ronmental problems that ecotoxicology must address, the approaches to individual problems also must vary. In part, as a consequence, there is no established protocol for application of the science to environmental prob lem-solving. The conceptual and methodological bases for ecotoxicology are, how ever, in their infancy, and thus still growing with new experiences. In deed, the only robust generalization for research on different ecosystems and different chemical stresses seems to be a recognition of the necessity of an ecosystem perspective as focus for assessment. This ecosystem basis for ecotoxicology was the major theme of a previous pUblication by the Ecosystems Research Center at Cornell University, a special issue of Environmental Management (Levin et al. 1984). With that effort, we also recognized an additional necessity: there should be a continued develop ment of methods and expanded recognition of issues for ecotoxicology and for the associated endeavor of environmental management. 564 pp. Englisch.
- Softcover
- Print-on-Demand
Anbieter: Majestic Books, Hounslow, Vereinigtes KönigreichMajestic Books
Verkäufer/-in kontaktierenVerkäufer/-in mit 4 SternenZustand: Neu
EUR 82,06
EUR 7,59 VersandVersand von Vereinigtes Königreich nach USAAnzahl: 4 verfügbar
Zustand: New. Print on Demand pp. 564 91 Figures, 49:B&W 6.14 x 9.21 in or 234 x 156 mm (Royal 8vo) Perfect Bound on White w/Gloss Lam.
- Softcover
- Print-on-Demand
Anbieter: Biblios, frankfurt am main, HESSE, DeutschlandBiblios
Verkäufer/-in kontaktierenVerkäufer/-in mit 4 SternenZustand: Neu
EUR 83,51
EUR 9,95 VersandVersand von Deutschland nach USAAnzahl: 4 verfügbar
Zustand: New. PRINT ON DEMAND pp. 564.
- Softcover
- Print-on-Demand
Anbieter: buchversandmimpf2000, Emtmannsberg, BAYE, Deutschlandbuchversandmimpf2000
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Neu
EUR 53,49
EUR 60,00 VersandVersand von Deutschland nach USAAnzahl: 1 verfügbar
Taschenbuch. Zustand: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Ecotoxicology is the science that seeks to predict the impacts of chemi cals upon ecosystems. This involves describing and predicting ecological changes ensuing from a variety of human activities that involve release of xenobiotic and oth…er chemicals to the environment. A fundamental principle of ecotoxicology is embodied in the notion of change. Ecosystems themselves are constantly changing due to natural processes, and it is a challenge to distinguish the effects of anthropogenic activities against this background of fluctuations in the natural world. With the frustratingly large, diverse, and ever-emerging sphere of envi ronmental problems that ecotoxicology must address, the approaches to individual problems also must vary. In part, as a consequence, there is no established protocol for application of the science to environmental prob lem-solving. The conceptual and methodological bases for ecotoxicology are, how ever, in their infancy, and thus still growing with new experiences. In deed, the only robust generalization for research on different ecosystems and different chemical stresses seems to be a recognition of the necessity of an ecosystem perspective as focus for assessment. This ecosystem basis for ecotoxicology was the major theme of a previous pUblication by the Ecosystems Research Center at Cornell University, a special issue of Environmental Management (Levin et al. 1984). With that effort, we also recognized an additional necessity: there should be a continued develop ment of methods and expanded recognition of issues for ecotoxicology and for the associated endeavor of environmental management.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 564 pp. Englisch.
