TY  - GEN
AU  - Townsend, Colin R.
AU  - Harper, John L. 
TI  - Essentials of ecology
SN  - 0632043482
U1  - 577 
PY  - 2000///
CY  - Massachusetts
PB  - Blackwell Science 
KW  - ECOLOGY
KW  - LIFE SCIENCE
ER  -