Jacobs, J. A., 1916- The earth's core / J.a. jacobs - 2 - 416 páginas - International geophysics series ; v. 37 . ISBN: 0123789516 Subjects--Topical Terms: Geomagnetismo Subjects--Geographic Terms: Tierra (Planeta)--Estructura interna LC Class. No.: QE509 / J315 1987