AU  - Gopal,Brij  .
TI  - Elements Of Ecology / 
SN  - 0 7069 0754 X
U1  - 598.74 
PY  - 1979///
CY  - N.Delhi
PB  - Vikas Publishing House Pvt Ltd , 
KW  - Zoology
N1  - NULL
ER  -