Dobzhansky, Theodosius,  1900-1975 <br/><br/>
Genetics and the origin of species / 
by Theodosius Dobzhansky 
 - 2rd rev. ed. 
 - New York :  Columbia University Press,  1941 
 - xviii, 446 p. :  ill. ;  25 cm. 
 - Columbia biological series ;  No.11 .
<br/><br/> "Based on a series of lectures delivered at Columbia university .. in October, 1936." - Pref 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Species, Origin of