TY  - BOOK
AU  - Pandey, G N  .
AU  - Carney,G C  .
TI  - Environmental engineering   Part-1,2 / 
U1  - 628 
PY  - 1989///
CY  - New Delhi : 
PB  - Tata Mc-Graw Hill Publishing Company , 
N1  - * CSS
ER  -