Progress of work in terrestrial magnetism of the U.S. Coast and Geodetic Survey, January 1, 1925, to June 30, 1927 / by N.H. Heck and D.L. Hazard.
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| Corporate Authors: | , , |
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| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington, D.C. :
U.S. G.P.O.,
1927.
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| Series: | Special publication (U.S. Coast and Geodetic Survey) ;
no. 133. |
| Subjects: |