1. Bacteriophages;Adams,1959
2. Transmission by the water vehicle;Berg,1966
3. Removal of Poliovirus I from secondary effluents by lime flocculation and rapid sand filtration;Berg;J. Am. Wat. Wks Ass.,1968
4. Phosphate removal by magnetic filtration;Bitton;Water Res.,1973
5. Virus inactivation on clay particles in natural waters;Carlson;J. Wat. Pollut. Control. Fed.,1968