Telford, William Murrayl 1917- Applied geophysics / W. M. Telford, L. P. Geldart, R. E. Sheriff - 2a ed - new york Cambridge University 1990 - xx, 770 p. il.,retrs. 25 cm ISBN: 0521339383 Subjects--Topical Terms: PROSPECCION--METODOS GEOFISICOS