Principal facts of the earth's magnetism and methods of determining the true meridian and the magnetic declination. /
<Reprinted from United States magnetic declination tables and isogonic charts for 1902>.
| Main Creator: | |
|---|---|
| Format: | Book |
| Language: | English |
| Published / Created: |
Washington :
Govt. print. off.,
1909.
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| Subjects: | |
| Notes: | At head of title: Department of commerce and labor. Coast and geodetic survey. O. H. Tittmann, superintendent. Physical description: 99 p., : ill ; 31 cm. more |