A survey of uranium concentrations in rocks and soils in populated areas of Arizona -- Methods

Duncan, J.T., and Spencer, J.E., 1991, A survey of uranium concentrations in rocks and soils in populated areas of Arizona -- Methods: Arizona Geological Survey Open-File Report 91-02, 9 p. [superseded by Duncan, J.T., and Spencer, J.E. (1993), in Arizona Geological Survey Bulletin 199].