TY - RPRT TI - Coal resource occurrence and coal development potential maps of the Rough Gulch Quadrangle, Rio Blanco and Moffat counties, Colorado AU - AAA Engineering and Drafting Inc. PY - 1979 DO - 10.3133/ofr79194 UR - https://pubs.usgs.gov/publication/ofr79194 ID - ofr79194 ER -