1. Allen, H. E., , J. R., Kramer, , Nutrients in natural waters, Environ. Sci. Technol., Wiley-Interscience Series of Texts and Monographs, New York, N. Y., 1972,
2. The effect of water treatment and distribution on trace element concentrations;Andelman,1975
3. The sorption of silver by poorly crystallized manganese oxides:;Anderson;Geochim. Cosmochim. Acta.,1973
4. U.S. Geol. Surv. Water Supply Pan.;Anderson,1973
5. Rates of physical and chemical processes in a carbonate aquifer;Back,1971