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  - 875530605 :
U1  - 543.3 
PY  - 1971///
CY  - Washington, D. C.
PB  - American Public Health Association
KW  - Water
KW  - Analysis
KW  - Biochemical oxygen demand
N1  - Includes bibliographical references and index
ER  -