TY  - RPRT
TI  - Geologic map of the Hunter-Fryingpan Wilderness Area and the Porphyry Mountain Wilderness Study Area, Pitkin County, Colorado
AU  - Steve Ludington
AU  - R. A. Yeoman
PY  - 1980
DO  - 10.3133/mf1236a
UR  - https://pubs.usgs.gov/publication/mf1236A
ID  - mf1236A
ER  -