TY - RPRT TI - Geologic map and coal sections of the Pine Ridge Quadrangle, Moffat County, Colorado AU - G.L. Prost AU - Michael E. Brownfield PY - 1983 DO - 10.3133/ofr83633 UR - https://pubs.usgs.gov/publication/ofr83633 ID - ofr83633 ER -