TY  - BOOK
ED  - American Water Works Association.
TI  - Water quality and treatment: a handbook of community watersupplies 
SN  - 0-07-001659-3
AV  - TD430 W38 1999
PY  - 1999///
CY  - New York
PB  - McGraw-Hill
N1  - Incluye bibliografia
ER  -