TY  - RPRT
TI  - Geologic map of the Grand Valley quadrangle, Garfield County, Colorado
AU  - John R. Donnell
AU  - Warren E. Yeend
PY  - 1968
DO  - 10.3133/ofr6877
UR  - https://pubs.usgs.gov/publication/ofr6877
ID  - ofr6877
ER  -