TY  - GEN
AU  - Townsend , colin  R.
AU  - Harper , John L
AU  - Begon , Michael 
TI  - Essencials of ecology 
SN  - 9780632043484
U1  - 577 
PY  - 2000///
CY  - London
PB  -  Blackwell Science Ltd.
KW  - ECOLOGY
KW  - BIOLOGY
KW  - APPLIED ISSUES
KW  - ECOSYSTEMS
ER  -