TY  - RPRT
TI  - Preliminary manuscript for "Mineral-resources potential and geology of the Challis 1 degree by 2 degrees Quadrangle, Idaho"
AU  - F. S. Fisher
AU  - K. M. Johnson
PY  - 1987
DO  - 10.3133/ofr87480
UR  - https://pubs.usgs.gov/publication/ofr87480
ID  - ofr87480
ER  -