TY - RPRT TI - Federal coal resource occurrence and coal development potential maps of the Bread Springs 7 1/2-minute Quadrangle, McKinley County, New Mexico AU - Berge Exploration Inc. PY - 1985 DO - 10.3133/ofr8035 UR - https://pubs.usgs.gov/publication/ofr8035 ID - ofr8035 ER -