- eBookWastewater BacteriaMichael H. Gerardi
- eBookNitrification and Denitrification in the Activated Sludge ProcessMichael H. Gerardi
- eBookSettleability Problems and Loss of Solids in the Activated Sludge ProcessMichael H. Gerardi
- eBookTroubleshooting the Sequencing Batch ReactorMichael H. Gerardi
- eBookWastewater PathogensMichael H. Gerardi
- eBookThe Microbiology of Anaerobic DigestersMichael H. Gerardi
- eBookThe Biology and Troubleshooting of Facultative LagoonsMichael H. Gerardi