Jacobs, J. A. The Earth's core and geomagnetism J. A. Jacobs - Oxford Pergamon Press 1963 - vi+137p. illus - Commonwealth and international library. Geophysics division; v. 1 . ISBN: 80103391 Subjects--Topical Terms: Earth's CoreGeomagnetism Universal Decimal Class. No.: 550.38 / JAC