TY  - RPRT
TI  - Geologic map of the Mount Wrightson Quadrangle, southeast of Tucson, Santa Cruz, and Pima counties, Arizona
AU  - Harald Drewes
PY  - 1971
DO  - 10.3133/i614
UR  - https://pubs.usgs.gov/publication/i614
ID  - i614
ER  -