TY  - BOOK
AU  - Grady, C. P. Leslie
AU  - Daigger, Glen T.
AU  - Lim, Henry C.
TI  - Biological Wastewater Treatment 
SN  - 0824789199
U1  - 628.30574 
PY  - 1999///
CY  - New York : 
PB  - Marcel Dekker, 
KW  - Sewage Purification Biological Treatment
N1  - YY
UR  - https://eaklibrary.neduet.edu.pk:8443/catalog/bk/books/toc/0-8247-8919-9.pdf
ER  -