AU  - Swarup, R.  .
TI  - Encyclopaedia of ecology,environment and pollution control / 
SN  - 81 7099 3695
U1  - 030 
PY  - 1992///
CY  - New Delhi
PB  - Mittal publications , 
KW  - Encyclopaedia
N1  - Rs.495; NULL
ER  -