TY - RPRT TI - Analytical results and sample locality maps of stream-sediment, heavy-mineral-concentrate, and rock samples from the Negro Bill Canyon (UT-060- 138) and the Mill Creek Canyon (UT-060-139A) Wilderness Study Areas, Grand County, Utah AU - J. H. Bullock AU - H. N. Barton AU - T. A. Roemer AU - P. L. Hageman AU - D.L. Fey PY - 1990 DO - 10.3133/ofr90464 UR - https://pubs.usgs.gov/publication/ofr90464 ID - ofr90464 ER -