Stebbins G Ledyard <br/><br/>
Variation and evolution in plants 

 -  1950 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>68953 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant variation
<br/><br/><label>Dewey Class. No.: </label>I:62, J0;4