TY  - BOOK
AU  - Walker, Denise
TI  - Adaptation and survival
T2  - Science essentials. Biology
SN  - 9780237530150
U1  - 578.4 
PY  - 2006///
CY  - London
PB  - Evans
KW  - Adaptation (Biology) - Juvenile literature
KW  - Competition (Biology) - Juvenile literature
ER  -