Radio acoustic method of position finding in hydrographic surveys / by N.H. Heck, U.S. Coast and geodetic survey, and E.A. Eckhardt, physicist, and M. Keiser, associate electrical engineer, U.S. Bureau of Standards.

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Bibliographic Details
Online Access:	Search for the full-text version of this title in HathiTrust
Main Author:	Heck, N. H. (Nicholas Hunter), 1882-1953
Corporate Author:	U.S. Coast and Geodetic Survey
Other Authors:	Eckhardt, E. A. (Engelhardt August), 1888-, Keiser, Morris
Format:	Government Document Book
Language:	English
Published:	Washington : Government Printing Office, 1924.
Series:	Special publication (U.S. Coast and Geodetic Survey) ; no. 107. Serial (U.S. Coast and Geodetic Survey) ; 277.
Subjects:	Radio. Sound. Hydrographic surveying.

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