TY  - BOOK
AU  -  World Health Organization 
TI  - Assessing microbial safety of drinking water: improving approaches and methods
SN  - 92 4 154630 1
U1  - WA690 
PY  - 2005///
CY  - Geneva
PB  - W H O
KW  - Water Microbiology
KW  - Water Purification
N2  -  Water Purification, Water Microbiology
ER  -