TY - RPRT TI - Preliminary geologic map of the Horse Mountain Quadrangle, Garfield County, Colorado AU - G. M. Fairer AU - M. W. Green AU - R. R. Shroba PY - 1993 DO - 10.3133/ofr93699 UR - https://pubs.usgs.gov/publication/ofr93699 ID - ofr93699 ER -