TY  - RPRT
TI  - Assessment of undiscovered porphyry copper deposits within the range of the northern spotted owl, northwestern California, western Oregon, and western Washington
AU  - Michael F. Diggles
PY  - 1991
DO  - 10.3133/ofr91377
UR  - https://pubs.usgs.gov/publication/ofr91377
ID  - ofr91377
ER  -