TY  - GEN
AU  - Mackenzie, A
AU  - Ball, A.S
AU  - Virdee, S.R
TI  - Instant notes in ecology
T2  - The Instant Notes Series
SN  - 8176490369
PY  - 1999///
CY  - New Delhi
PB  - Viva Books
KW  - PUBLIC HEALTH AND ENVIRONMENTAL ENGINEERING
ER  -