Techniques for the collection and reporting of data on community water supply :
Techniques for the collection and reporting of data on community water supply : report of a WHO scientific group [meeting held in Geneva from 24 to 30 August 1971]
- Geneva : World Health Organization, 1972.
- 24 p.
- World Health Organization technical report series ; no. 490 .
eng fre spa.
9241204907
Water supply.
Data collection.
Information services.
WA 675
eng fre spa.
9241204907
Water supply.
Data collection.
Information services.
WA 675