TY  - BOOK
AU  - Dowdeswell,Wilfrid Hogarth
ED  - Heinemann Educational Books
TI  - Ecology: principles and practice 
SN  - 0435602268
U1  - 577 23
PY  - 1984///.
CY  - London: 
PB  - Heinemann Educational Books, 
KW  - Ecology
N1  - Includes index
ER  -