Results of observations made at the Coast and Geodetic Survey Magnetic Observatory at Cheltenham, Maryland 1905 and 1906 /
Hlavní autor: | |
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Typ dokumentu: | Kniha |
Jazyk: |
angličtina |
Vydavatel: |
Washington :
Government Printing Office,
1909.
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Edice: |
[U.S. Coast and Geodetic Survey] ;
Serial No. 114 |
Předmět: | |
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