TY  - BOOK
AU  - Swarup, R.  .
TI  - Encyclopaedia of ecology, environment and pollution control / 
SN  - 81-7099-360-1
U1  - G:5 
PY  - 1992///
CY  - New Delhi : 
PB  - Mittal Publications , 
KW  - Environment
ER  -