TY  - BOOK
AU  - Tiwari, B D	
TI  - Sewage pollution and microbiology /			
SN  - 9788189981310
U1  - 363.7392 TIW 
PY  - 2009///
CY  - New Delhi : 
PB  - Swastik Publishers & Distributors,	
N1  - Includes Index
ER  -