TY  - RPRT
TI  - Preliminary geologic map of the Hells Canyon area, Adams and Idaho Counties, Idaho, and Wallowa County, Oregon
AU  - James Louis Gualtieri
AU  - George Clarke Simmons
PY  - 1978
DO  - 10.3133/ofr78805
UR  - https://pubs.usgs.gov/publication/ofr78805
ID  - ofr78805
ER  -