TY  - BOOK
AU  - Putman, R.J. .
TI  - Principles of ecology / 
SN  - 0-7099-2050-4
U1  - G:5 
PY  - 1984///
CY  - London : 
PB  - Crom Helm , 
KW  - Life Science <Ecology>
ER  -