TY  - BOOK
AU  - Darwin,Charles Robert
TI  - The origin of species: by means of natural selection; The descent of man : and selection in relation to sex 
T2  - Great books of the Western World
U1  - 575.8 
PY  - 1952///
CY  - Chicago, IL.
PB  - Encyclopaedia Britannica
KW  - Evolución
KW  - Herencia
KW  - Selección natural
N1  - Incluye bibliografía
ER  -