TY - RPRT TI - Federal coal resource occurrence and federal coal potential maps of the Hackett 7.5-minute quadrangle, Le Flore County, Oklahoma, and Sebastian County, Arkansas AU - J. L. Querry AU - Geological Services of Tulsa PY - 1985 DO - 10.3133/ofr79497 UR - https://pubs.usgs.gov/publication/ofr79497 ID - ofr79497 ER -