TY  - BOOK
AU  - Darwin,Charles (Charles Robert)
AU  - Horan,Patricia
TI  - The origin of species: by means of natural selection or the preservation of favoured races in the struggle for life 
SN  - 0517309785
PY  - 1979///]
CY  - New York
PB  - Avenel Books
KW  - Evolution (Biology)
KW  - Species
KW  - Evolution
KW  - Natural selection
ER  -