TY - RPRT TI - Content of adsorbed methane in coal from four core holes in the Raton and Vermejo formations, Las Animas County, Colorado AU - Walter Danilchik AU - Janet E. Schultz AU - Carol Morgans Tremain PY - 1979 DO - 10.3133/ofr79762 UR - https://pubs.usgs.gov/publication/ofr79762 ID - ofr79762 ER -