TY  - RPRT
TI  - Mineral resources of the Chama-southern San Juan Mountains Wilderness Study Area, Mineral, Rio Grande, Archuleta, and Conejos counties, Colorado
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1977
DO  - 10.3133/ofr77309
UR  - https://pubs.usgs.gov/publication/ofr77309
ID  - ofr77309
ER  -