Voice Frequency Telegraphy System No 26 D Two articles : a lecture given on January 21 1935 to The Post Office Telephone And Telegraph Society + paper reproduced From The Post Office Electrical Engineers' Journal Oc.tober 1933 with modifications Ref : (122) wt 33739 - p803 12M 5/36 Gp 389. EXTREMELY SCARCE

Vernon, R J + Mercer, C J ( O.B.E., M.I.E.E. )

Verlag: The Post Office & HMSO London, 1936

Beschreibung

1st edition + 1st edition thus ( two papers ). 4to. 34 + (2)pp. Bw photo frontis + 8 other bw plates. Publisher's cream soft card wrappers, green lettering + green illustration outline of UK within white circle + " No 26 D " on front. Two staple hinges through. Covers : hinges rusting with slight offsetting, faint dusty marks to front. Contents : very clean, tight & unfoxed. VG. Bestandsnummer des Verkäufers 25131

Bibliografische Details

Titel: Voice Frequency Telegraphy System No 26 D ...

Verlag: The Post Office & HMSO London

Erscheinungsdatum: 1936

Einband: Soft cover

Zustand: Very Good

Auflage: 1st Edition