TY  - RPRT
TI  - Preliminary geologic map of the Sahuarita quadrangle, Pima County, Arizona
AU  - Harald Drewes
PY  - 1968
DO  - 10.3133/ofr6889
UR  - https://pubs.usgs.gov/publication/ofr6889
ID  - ofr6889
ER  -