TY  - BOOK
AU  - Dowdeswell,W.H.
TI  - Ecology: principles and practice 
SN  - 0435602268 (pbk.) :
AV  - QH541 .D75 1984
U1  - 574.5 19
PY  - 1984///
CY  - London, Exeter, N.H.
PB  - Heinemann Educational
KW  - Ecology
N1  - Includes index; Bibliography: p. 294-298
ER  -