TY  - RPRT
TI  - Geologic map of the Iris Quadrangle, Gunnison and Saguache counties, Colorado
AU  - Jerry C. Olson
PY  - 1975
DO  - 10.3133/ofr7563
UR  - https://pubs.usgs.gov/publication/ofr7563
ID  - ofr7563
ER  -