TY  - RPRT
TI  - Reconnaissance bedrock geologic map of the Sells Quadrangle, Pima County, Arizona
AU  - D. J. May
AU  - Gordon Haxel
PY  - 1980
DO  - 10.3133/mf1166
UR  - https://pubs.usgs.gov/publication/mf1166
ID  - mf1166
ER  -