Surveillance of drinking-water quality.
Surveillance of drinking-water quality.
- Geneva : World Health Organization, 1976.
- 135 p.
- World Health Organization monograph series ; no. 63 .
eng fre spa.
9241400633
Drinking water--standards.
Water pollution--prevention and control.
Water supply--standards.
WA 675
eng fre spa.
9241400633
Drinking water--standards.
Water pollution--prevention and control.
Water supply--standards.
WA 675