Results of observations made at U.S. Coast and Geodetic Survey magnetic observatory at Cheltenham, Md., 1919 and 1920.

Bibliographic Details
Corporate Author: U.S. Coast and Geodetic Survey
Format: Government Document eBook
Language:English
Published: [Washington] : GPO, 1919-1920.
Subjects:
Online Access:Connect to the full text of this electronic document

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