TY  - RPRT
TI  - Geology of the Ignacio area, Ignacio and Pagosa Springs quadrangles, La Plata and Archuleta Counties, Colorado
AU  - Harley Barnes
PY  - 1953
DO  - 10.3133/om138
UR  - https://pubs.usgs.gov/publication/om138
ID  - om138
ER  -