TY  - BOOK
ED  - American Public Health Association
ED  - American Water Works Association
TI  - Standard methods: for the examination of water and wastewater 
SN  - 0875530915
AV  - QD142 A72 1981
PY  - 1981///
CY  - Washington
PB  - American Public Health Association
KW  - Agua
KW  - Análisis
KW  - Aguas residuales
ER  -