TY - RPRT TI - Geochemical exploration for copper-nickel deposits in the cool-humid climate of northeastern Minnesota AU - W. R. Miller AU - W. H. Ficklin AU - J. B. McHugh PY - 1992 DO - 10.1016/0375-6742(92)90030-c UR - https://pubs.usgs.gov/publication/70017227 ID - 70017227 ER -