TY  - RPRT
TI  - Photo-image map of parts of Peru, Bolivia, and Chile
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1967
DO  - 10.3133/ofr67259
UR  - https://pubs.usgs.gov/publication/ofr67259
ID  - ofr67259
ER  -