TY  - BOOK
AU  - Slingsby, David
AU  - Cook, Ceridwen
TI  - Practical ecology / David Slingsby and Ceridwen Cook
U1  - B 15.7 SLI -3578   
CY  - London : Macmillan, 1986.
KW  - Ecology
KW  - EDU
ER  -