TY  - RPRT
TI  - Geologic reconnaissance map of the Bear Mountain and Oakbrush Ridge quadrangles, Hinsdale and Archuleta counties, Colorado
AU  - W. J. Hail
PY  - 1971
DO  - 10.3133/ofr71141
UR  - https://pubs.usgs.gov/publication/ofr71141
ID  - ofr71141
ER  -