geohydrologic study

A geohydrologic study of the regional ground-water system in Avra valley, Pima and Pinal counties, Arizona

1983
A geohydrologic study of the regional ground-water system in Avra valley, Pima and Pinal counties, Arizona
Whallon, Arthur John
Master's Thesis
Hydrology
Eugene S. Simpson
Subsurface Hydrology
PDF of abstract here