The international drinkng water supply and sanitation decade directo ry/
The international drinkng water supply and sanitation decade directo ry/
World water
- 2nd ed.
- Whitstable : World water, 1984
- 4407 p.: photos, tables, graphs ; 30 cm.
Includes bibliographical references
Water--------
Water- supply--------
Includes bibliographical references
Water--------
Water- supply--------