1938 Radio Aids to Navigation, Volume I, Including Details of Direction-Finder Stations, Radiobeacons, Navigational Warnings, Time Signals, Etc.

Bibliographic Details

Corporate Author:	United States. Hydrographic Office
Format:	Government Document eBook
Language:	English
Published:	[Washington] : [s.n.], 1937.
Subjects:	Hydrography. Navigation. Radio. Weights and measures.
Online Access:	Electronic resource (PDF)