liu ling zhang ying zhong (4 Ergebnisse)

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paperback. Zustand: New. Paperback. Pub Date: 2021-04-01 Pages: 90 Language: Chinese Publisher: China Forestry Publishing House Hainan is one of the main mangrove areas in my country.?Due to historical unreasonable development. utilization and man-made destruction of mangrove forests in Hainan. such as reclamation of land from the sea. digging of ponds and aquaculture. and water pollution. the area of ??mangroves has been reduced and the quality of forests has declined. and it is in urgent need of restoration.?This b.

Hardcover. Zustand: New. HardCover Pub Date: 2007 Pages: 3 Language: Chinese in Publisher: China Building Industry Press concretor (junior workers Intermediate workers senior workers) includes a total of eight types of construction works. including junior workers in each trade. Intermediate 3 VCD. workers. senior workers is compiled according to the Ministry of Construction promulgated occupational skill standards of the construction industry and the construction of vocational skills job the identification specificat.

Hardcover. Zustand: New. HardCover Pub Date: November 2007 Pages: 3 Language: Chinese in Publisher: China Building Industry Press the building mechanic Grading training tutorial: plastering work (junior workers. mid-level workers. senior workers) (with 3 VCD) total including eight types of construction works. each type of work with junior workers. mid-level workers. senior workers 3 VCD discs. is based on the construction industry occupational skills standards promulgated by the Ministry of Construction and building .