TY  - BOOK
AU  - N V MODAK
TI  - SEWAGE AND WASTE WATER TREATMENT
U1  - GN628.32M72S 
PY  - 1971///
CY  - BOMBAY
PB  - SOMIYA PUBLICATION PVT LTD
KW  - SEWAGE AND WASTE WATER TREATMENT
N1  - METROPOLITON DELHI
ER  -