TY  - RPRT
TI  - Geologic map of the Ophir quadrangle, San Juan, San Miguel, and Dolores Counties, Colorado
AU  - Robert G. Luedke
PY  - 1996
DO  - 10.3133/gq1760
UR  - https://pubs.usgs.gov/publication/gq1760
ID  - gq1760
ER  -