TY  - BOOK
AU  - Gibson, J. Phil
AU  - Gibson, Terri R
TI  - Natural selection
SN  - 9780791097847
SN  - 200804725
U1  - 576.82 GIB 
PY  - 2009///
CY  - New York
PB  - Chelsea House
KW  - Darwin, Charles, 1809-1882 - Juvenile literature
KW  - Evolution (Biology) - Juvenile literature
KW  - Natural selection - Juvenile literature
N1  - Includes bibliographical references and index
ER  -