1. References;Microbiology of Drinking Water;2014-09-26
2. Microbial Contaminants in Drinking Water;Microbiology of Drinking Water;2014-09-26
3. Wastewater, 2. Aerobic Biological Treatment;Ullmann's Encyclopedia of Industrial Chemistry;2011-10-15
4. References;Wastewater Microbiology;2010-11-08
5. Pathogens and Parasites in Domestic Wastewater;Wastewater Microbiology;2010-11-08