TY  - BOOK
AU  - Cook Ceridwen
AU  -  Slingsby David
TI  - Practical ecology
T2  - Dimensions of Science Series
U1  - U:(G:5), M6 
PY  - 1986///
CY  - London
PB  - Macmillan          
KW  - Geography Irt Ecology
ER  -