TY  - BOOK
AU  - Darwin,Charles
TI  - On the origin of species by means of natural selection, or, The preservation of favoured races in the struggle for life
SN  - 978-0-140-43912-0
PY  - 2009///
CY  - London
PB  - Penguin Books Ltd
KW  - Evolution ( Biology )
KW  - Natural selection
ER  -