Publication Date 1996 Citation Tucson, University of Arizona, Ph.D. dissertation, 285 p. State AZ Province BR County LP PM Placenames Ranegras Plain Tucson Basin Basins Ranegras Plain Tucson Ama Watersheds Colorado River Santa Cruz River Keywords Groundwater Chromium Pollution Isotope Geochemistry Geochemical Survey More Keywords Groundwater, Chromium, Pollution, Isotope Geochemistry, Geochemical Survey, AzGeoBib RefNum 17006
