TY  - BOOK
AU  - Diwan,A.P., Arora, D. K.
AU  - x
TI  - Ecology of environmen cyclel: x
SN  - 8174881204
U1  - 574.526/D618e 
PY  - 1995///
CY  - New Delhi
PB  - Anmol Pub.
KW  - Ecology
KW  - Environment
N1  - x
ER  -