PARASNIS, D. S. PRINCIPLES OF APLLIED GEOPHYSICS - 0 - LONDON-U.S.A. CHAPMAN AND HALL LTD 1962 - 214 pag 21 cm - 0 0 . MAGNETIC GRAVITATIONAL/ELECTRICAL ISBN: 412-10980-8 Subjects--Topical Terms: CIENCIAS PURAS Dewey Class. No.: 550 / P26