TY  - BOOK
AU  - Darwin,Charles
TI  - The origin of species: by means of natural selection 
SN  - 9780553214635
AV  - QH365 .D37 1999
PY  - 1999///
CY  - New York
PB  - Bantam classic
KW  - Evolution (Biology)
KW  - Natural selection
N1  - Environmental Science & Management
ER  -