TY  - BOOK
AU  - Schmalhausen, I I
AU  - Dordick, Isadore
AU  - Dobzhansky, Theodosius
TI  - Factors of Evolution: The Theory of Stabilizing Selection
U1  - 575.1 
PY  - 1949///
CY  - New York
PB  - Blakiston Company, Inc
KW  - Evolution
ER  -