TY  - BOOK
AU  - Butter Samuel
ED  - 
TI  - Luck,or cunning, as the main means of organic modification?, an attempt to throw additional light upon darwin,s theory of natural selection
U1  - 575.0162 but /luc 
PY  - 1920///
CY  - London
PB  - A.C.Field
N1  - B
ER  -