TY  - BOOK
ED  - American Public Health Association
ED  - American Water Works Association
ED  - Water Pollution Control Federation
TI  - Standard methods: For the examination of water and wastewater 
SN  - 0875530605
AV  - QD142 A72 1971
PY  - 1971///
CY  - [washington, d.c.]
PB  - American public health association
KW  - Agua
KW  - Análisis
KW  - Aguas residuales
N1  - Incluye tablas en las guardas
ER  -