TY - RPRT TI - Federal coal resource occurrence and federal coal development potential maps of the Blocker 7.5-minute quadrangle, Pittsburg and Latimer Counties, Oklahoma AU - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey PY - 1985 DO - 10.3133/ofr79302 UR - https://pubs.usgs.gov/publication/ofr79302 ID - ofr79302 ER -