TY  - BOOK
AU  - Rao, M. N.
AU  - Datta, A. K.
TI  - WASTE WATER TREATMENT
U1  - 628.3 
PY  - 1979///
CY  - Calcutta
PB  - Oxford
KW  - Sewage -- Purification -- Biological Treatment
KW  - Sewage Disposal -- Environmental Aspects
KW  - Factory And Trade Waste
ER  -