TY - RPRT TI - Mineral resources of the Willow Creek and Skull Creek Wilderness Study Areas, Moffat County, Colorado AU - Richard E. Van Loenen AU - Helen W. Folger AU - Dolores M. Kulik AU - W. Anthony Bryant AU - Stanley L. Korzeb PY - 1990 DO - 10.3133/b1717d UR - https://pubs.usgs.gov/publication/b1717D ID - b1717D ER -