TY  - BOOK
AU  - Mackenzie, A.
ED  - Ball, A.S.
ED  - Virdee, S.R.
TI  - Ecology
T2  - Instant notes series
SN  - 8176490369
U1  - 574.5 
PY  - 1999///
CY  - New Delhi
PB  - Viva Books
KW  - Ecology
KW  - Balance of nature
KW  - Environment
N1  - Library has 2nd ed. also
ER  -