TY  - BOOK
AU  - Greenberg,Arnold E.
ED  - American Public Health Association.
ED  - American Water Works Association.
ED  - Water Pollution Control Federation.
ED  - Water Environment Federation.
TI  - Standard methods: for the examination of water and wastewater 
SN  - 0875531318
PY  - 1985///
CY  - Washington
PB  - American Public Health Association
N1  - Sixteenth edition
ER  -