Principal Facts of the Earth's Magnetism and Methods of Determining the True Meridian and the Magnetic Declination. Reprinted From the United States Magnetic Declination Tables and Isogonic Charts

This book provides an in-depth guide to the earth's magnetism, including methods for determining the true meridian and magnetic declination. Originally published in 1902 by the U.S. Coast and Geodetic Survey, this edition is a reprint of that original work.

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