TY  - BOOK
AU  - Darwin,Charles
AU  - Burrow,John Wyon
TI  - The origin of species by means of natural selection , or The preservation of favoured races in the struggle for life
PY  - 1968///]
CY  - Baltimore
PB  - Penguin Books
KW  - Evolution (Biology)
KW  - Natural selection
N1  - Includes bibliogr. references : (p. 461-462)
ER  -