TY  - BOOK
AU  - Beeby,Alan
AU  - Brennan,Anne-Maria
TI  - First ecology: ecological principles and environmental issues 
AV  - QH541 .B4145 2008
PY  - 2008///
CY  - New Delhi
PB  - Oxford University Press
KW  - Ecology
KW  - Human ecology
ER  -