Bilby steel tower for triangulation.

Bibliographic Details

Corporate Author:	U.S. Coast and Geodetic Survey
Other Authors:	Bilby, Jasper S. (Jasper Sherman), 1864-1949
Format:	Government Document eBook
Language:	English
Published:	[Washington?] : U.S. Government Printing Office, 1929.
Series:	Coast and Geodetic Survey Spec. Pub. No. 158
Subjects:	Triangulation. Electronic books.
Online Access:	Connect to the full text of this electronic document