Smith, B.D., 1988, The distribution of Radon - 222 in the ground water of the north-central Tucson Basin and its relationship to the hydrogeology: Tucson, University of Arizona, M.S. thesis, 100 p., 1 sheet.
Tucson, University of Arizona, M.S. thesis, 100 p., 1 sheet., scale 1:126,720
Radon, Hazard, Geochemical Survey, Groundwater,