Fairhead, J.D. Large scale compilation of magnetic gravity, radiometric and electromagnetic data: the new exploration strategy for the 90s - Toronto Prospectors and Developers Association of Canada 1997 - pp. 805-816 ilus. Subjects--Topical Terms: BASES DE DATOSGEOFISICAINFORMACION GEOFISICA Universal Decimal Class. No.: R/061.3:550.8(100)/I61|29