1. Coprecipitation of thorium with barium sulfate;Ambe;Radiochim. Acta,1978
2. Radium removal from uranium mill effluents with organic ion exchangers;Arnold;Ind. Eng. Chem. Process Des. Dev.,1965
3. Radon emanation from domestic uranium ores determined by modifications of the closed-can, gamma-only assay method;Austin;U.S. Bur. Mines Rep. Invest.,1978
4. Absorption of radium and thorium from Wyoming and Utah uranium mill tailings solutions;Beard;U.S. Bur. Mines Rep. Invest.,1979
5. Study and interpretation of the chemical characteristics of natural water (second edition);Hem;U.S. Geol. Surv. Water Supply Pap.,1970