TY  - BOOK
ED  - American Water Works Association
TI  - Water quality and treatment: a handbook of public water supplies
U1  - 543.3 
PY  - 1971///
CY  - New York
PB  - McGraw-Hill
KW  - Agua
KW  - Análisis
KW  - Calidad
KW  - Purificacion
ER  -