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3by Geological Survey (U.S.), Pecora, William T., Gerlach, Arch C., Overstreet, William B.Subjects: “...Geomagnetism...”
Published 1965
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4by Canada. Department of Mines and Technical Surveys, Nicholson, N. L. (Norman Leon), Comtois, PaulSubjects: “...Geomagnetism...”
Published 1957
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5by La Pérouse, Jean-François de Galaup, comte de, 1741-1788;Subjects: “...Geomagnetism -- Maps -- Early works to 1800...”
Published 1788
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6by Geological Survey (U.S.), Pecora, William T., Gerlach, Arch C., Overstreet, William B.“...Physical map representing the United States, featuring gravity, seismology and geomagnetism...”
Published 1970
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7by Van Ewyk, Nicolaas“... and northeast, like a geomagnetic prime meridian. On both hemispheres, the magnetic pole is marked. In the north...”
Published 1752
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8by Van Ewyk, Nicolaas“... and northeast, like a geomagnetic prime meridian. On both hemispheres, the magnetic pole is marked. In the north...”
Published 1752
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