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Cover of Magnetic variation in the United States

Magnetic variation in the United States

by Jacob Bennett Stone

1878 139 pages eng

Magnetic Variation in the United States: Being a Compilation of Observations Made in Maerical from the year 1640 to the Present Date; Tabulated and Arranged for the use of Surveyors, with a brief account of the nature of Terrestrial Magnetism, its various theories as to the Origin, its Change in Int…

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