TY  - RPRT
TI  - Physiography and Quaternary geology of the San Juan Mountains, Colorado
AU  - Wallace W. Atwood
AU  - Kirtley F. Mather
PY  - 1932
DO  - 10.3133/pp166
UR  - https://pubs.usgs.gov/publication/pp166
ID  - pp166
ER  -