TY  - RPRT
TI  - Preliminary geologic map of the Mount Wrightson quadrangle, Santa Cruz and Pima Counties, Arizona
AU  - Harald Drewes
PY  - 1966
DO  - 10.3133/ofr6628
UR  - https://pubs.usgs.gov/publication/ofr6628
ID  - ofr6628
ER  -