- Wastewater Bacteria
- Protozoa and Metazoa in Wastewater Treatment Processes
- Microscopic Examination of Activated Sludge Mixed Liquor and Foam (Wastewater Microbiology)
- The Microbiology of Anaerobic Digesters
- Settleability Problems and Loss of Solids in the Activated Sludge Process (Wastewater Microbiology Series)