Stebbins, G. Ledyard (George Ledyard), 1906-. <br/><br/>
Variation and evolution in plants / 
by G. Ledyard Stebbins. 
 - Calcutta :  Oxford & IBH Publishing Co.,  1950. 
 - xix, 643 p. :  ill., maps. ;  24 cm. 
 - Columbia biological series  Number XVI .
<br/><br/>'Works cited': p. 563-622. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plants--Evolution.<br/>Botany--Variation.