TY  - BOOK
ED  - World Health Organization.
TI  - Guidelines for drinking-water quality / 
U1  - 628.161 19
PY  - 1984/// [reprint 1991]
CY  - Delhi
PB  - CBS Publishers & Distributors, 
KW  - Drinking water
KW  - Standards
KW  - Water-supply
KW  - Standards.
ER  -