Watts, A. Exploring for nickel in the 90s, or 'til depth us do part' - Toronto Prospectors and Developers Association of Canada 1997 - pp. 1003-1014 ilus. Subjects--Topical Terms: EXPLORACION MINERANIQUELPROSPECCION ELECTROMAGNETICA Universal Decimal Class. No.: R/061.3:550.8(100)/I61|16