TY - RPRT TI - Quantitative estimation of undiscovered mineral resources: A case study of US Forest Service Wilderness tracts in the Pacific Mountain system AU - L. J. Drew AU - J. D. Bliss AU - R. W. Bowen AU - N.J. Bridges AU - Dennis P. Cox AU - J. H. DeYoung AU - J.C. Houghton AU - Steven D. Ludington AU - W. D. Menzie AU - Norman J. Page AU - D. H. Root AU - Donald A. Singer PY - 1986 DO - 10.2113/gsecongeo.81.1.80 UR - https://pubs.usgs.gov/publication/70015179 ID - 70015179 ER -