1. Standard methods for the examination of water and waste water;APHA,1976
2. Self-purification in natural waters;Benoit,1971
3. Infectious disease hazards of landspreading sewage waters;Burge;J. environ. Qual.,1978
4. Water pollution;Hodges,1977
5. Dispersion of enteric bacteria by spray irrigation;Katzenelson;J. Wat. Pollut. Control Fedn.,1976