Emer, D.F., Shenk, J.D., and Spencer, J.E., 1988, Reconnaissance gamma-ray spectrometer survey of radon-decay products in selected populated areas of Arizona: Arizona Geological Survey Open-File Report 88-12, 88 p.
Emer, D.F., Shenk, J.D., and Spencer, J.E., 1988, Reconnaissance gamma-ray spectrometer survey of radon-decay products in selected populated areas of Arizona: Arizona Geological Survey Open-File Report 88-12, 88 p.
Radiometric Survey, Radon, Igneous, Metamorphic, Sedimentary,