TY  - BOOK
AU  - American Public Health Association
TI  - Standard methods for the examination of water and sewage. Ed 9
U1  - 543.31 
PY  - 1964///
CY  - New York
PB  - American Public Health Association
N1  - American Public Health Association: Standard methods for the examination of water and sewage. Ed 9.  (9th Edition.)  New York.  American Public Health Association, 1964.--(543.31AME)
ER  -