Operation and maintenence of urban water supply and sanitation systems : a guide for managers.
Operation and maintenence of urban water supply and sanitation systems : a guide for managers.
- Geneva : World Health Organization, 1994.
- 102 p. : ill. ; 24 cm.
9241544716
Water supply.
Sanitation.
Maintenance.
9241544716
Water supply.
Sanitation.
Maintenance.
