Terrestrial magnetism. Distribution of magnetic dip and magnetic intensity in United States for epoch Jan. 1, 1900, by Charles A. Schott; app. 1, report, 1897.
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Terrestrial magnetism. Distribution of magnetic dip and magnetic intensity in United States for epoch Jan. 1, 1900, by Charles A. Schott; app. 1, report, 1897.
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Terrestrial magnetism. Distribution of magnetic dip and magnetic intensity in United States for epoch Jan. 1, 1900, by Charles A. Schott; app. 1, report, 1897.