TY  - BOOK
AU  - Darwin, Charles.
TI  - The origin of species by means of natural selection. The descent of man and selection in relation to sex. - 2nd edition
SN  - 0-85229-531-6
PY  - 1990///
CY  - Chicago ; Auckland ; Geneva 
PB  - Encyclopd̆ie Britannica, Inc.
ER  -