TY  - RPRT
TI  - Preliminary report on the mineral resources of the Powderhorn Instant study area, Gunnison and Hinsdale counties, Colorado
AU  - William N. Sharp
AU  - R.A. Martin
AU  - Michael Lane
PY  - 1980
DO  - 10.3133/ofr801057
UR  - https://pubs.usgs.gov/publication/ofr801057
ID  - ofr801057
ER  -