TY  - BOOK
AU  - Modak, N V
TI  - Sewage and waste water treatment
U1  - 628.30954 21st
PY  - 1971///
CY  - Bombay
PB  - Somaiya
KW  - Sewage-Purification-India; Factory and trade waste-India; Sewage sladge-India; Sewage disposal-India
ER  -