TY  - BOOK
AU  - Darwin Charles
TI  - On the origin of species: a facsimile of the first edition
U1  - 576.82 
PY  - 1964///
CY  - Cambridge
PB  - Harvard Univ Press
KW  - Evolution (Biology)
KW  - Natural selection
N1  - An introduction by Ernst Mayr
ER  -