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Principal facts of the earth's magnetism and methods of determining the true meridian and the magnetic declination

Principal facts of the earth's magnetism and methods of determining the true meridian and the magnetic declination - Washington, D. C. Department of U. S. Coast and Geoelectric Survey 1909 - 99p. charts; diagrams; illus; plates; tables

1152034375


Earth's Magnetic PolesMagnetic ChartsMagnetic ObservationsMagnetic SurveysVariations of Earth's Magnetism

550.38 / USCGS