Results of observations made at the U.S. Coast and Geodetic Survey Magnetic Observatory near Tucson, Ariz., in 1919 and 1920 /
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| Typ dokumentu: | Kniha |
| Jazyk: |
angličtina |
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Washington :
Government Printing Office,
1924.
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| Edice: |
Serial [of] Department of Commerce, U.S. Coast and Geodetic Survey ;
No. 248 |
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