TY  - RPRT
TI  - Map showing chemical quality of ground water for public supply in the Tucson area, Arizona
AU  - W. R. Osterkamp
AU  - R. L. Laney
PY  - 1974
DO  - 10.3133/i844l
UR  - https://pubs.usgs.gov/publication/i844L
ID  - i844L
ER  -