TY  - BOOK
TI  - Standard methods: for the examination of water and wastewater
SN  - 0-87553-091-5
U1  - 628.2 
PY  - 1981///
CY  - Washington
PB  - American Public Health Association
KW  - Sewage
KW  - Wast water treatment
KW  - Water-Purification
N1  - Includes bibliographical references and index
ER  -