TY  - BOOK
ED  - World Health Organization
TI  - International standards for drinking-water
U1  - 614.34 
PY  - 1971///.
CY  - Geneva: 
KW  - Drinking water
KW  - Standards
KW  - Water
KW  - standards
KW  - Water-supply
N1  - Bibliography: p. 64-67
ER  -