Stebbins, G. Ledyard <br/><br/>
Variations and evolution in plants 

 - New York  Columbia University Press  1950 
 - xix, 643p.  24cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plants
<br/><br/><label>LC Class. No.: </label>QK980.S8