 |  | Operation and Maintenance of Water and Sewerage Systems (Ministry of Water - Tanzania - Rwegarulila Water Resources Institute, 1999, 90 p.) | |||
 |  | (introduction...) | |||
|  | A. Maintenance of Water Supply Units Principles and General Procedures | |||
| | B. Operation and Maintenance in Tanzania | |||
| | C. General Guide Lines in Construction of Water Structure | |||
| | D. Operation and Maintenance Tasks and Their Frequencies | |||
| | ANNEXES | |||
