Lines of equal magnetic declination and of equal annual change in the United States for 1905
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| Autors principals: | , |
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| Format: | Mapa |
| Idioma: | anglès |
| Publicat: |
U. S. Coast and Geodetic Survey
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| Etiquetes: |
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3rd Floor Main Library
| Signatura: |
A1234.567 |
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| Còpia 1 | Disponible |