Magnetism of the earth
Nelson, James H.
Magnetism of the earth James H. Nelson - Washington, D. C. U.S. Government Printing Office 1962 - iv+79p.
Earth's MagnetismMagnetic Earth
550.38 / NEL
Magnetism of the earth James H. Nelson - Washington, D. C. U.S. Government Printing Office 1962 - iv+79p.
Earth's MagnetismMagnetic Earth
550.38 / NEL