Geology, radioactivity, and radon at the Cardinal Avenue uranium anomaly, southwestern Tucson, in Spencer, J.E., ed., Radon in Arizona

Spencer, J.E., Emer, D.F., and Shenk, J.D., 1993, Geology, radioactivity, and radon at the Cardinal Avenue uranium anomaly, southwestern Tucson, in Spencer, J.E., ed., Radon in Arizona: Arizona Geological Survey Bulletin 199, p. 10-16.