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3by Charcot, Jean, 1867-1936., Rey, Joseph Jean Justin, 1873-, Matha, André, 1873-, France. Ministère de la marine et des colonies.Subjects: “...Geomagnetism...”
Published 1911
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4by Lemström, Selim, 1838-1904., Biese, Ernst, 1856-1926., Suomen Tiedeseura., Finska polarexpeditionen (1882-1884)Subjects: “...Geomagnetism...”
Published 1886
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6by Moore, Alan F.Subjects: “...Geomagnetism...”
Published 1962
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7Subjects: “...geomagnetic variations...”
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