TY - JOUR AU - Nour, Svetlana AU - El-sharkawy, A AU - Burnett, W AU - Horwitz, E C2 - Applied Radiation and Isotopes DA - 2004-01-01 LA - en M1 - 61 PB - Applied Radiation and Isotopes PY - 2004 TI - Radium-228 Determination of Natural Waters Via Concentration On Manganise Dioxide And Separation Using Diphonix Ion Exchange Resin ER -