TY - RPRT TI - Selected references on the geology of the Yampa coal field and Sand Wash Basin, Moffat, Routt, and Rio Blanco counties, Colorado AU - E. A. Johnson AU - Michael E. Brownfield PY - 1984 DO - 10.3133/ofr84769 UR - https://pubs.usgs.gov/publication/ofr84769 ID - ofr84769 ER -