- Cărți electroniceWastewater BacteriaMichael H. Gerardi
- Cărți electroniceNitrification and Denitrification in the Activated Sludge ProcessMichael H. Gerardi
- Cărți electroniceTroubleshooting the Sequencing Batch ReactorMichael H. Gerardi
- Cărți electroniceSettleability Problems and Loss of Solids in the Activated Sludge ProcessMichael H. Gerardi
- Cărți electroniceWastewater PathogensMichael H. Gerardi
- Cărți electroniceThe Microbiology of Anaerobic DigestersMichael H. Gerardi
- Cărți electroniceThe Biology and Troubleshooting of Facultative LagoonsMichael H. Gerardi