Delevoryas, Theodore,  1929- <br/><br/>
Plant diversification. 

 - Rinehart and Winston, New York:  Holt,  1966. 
 - ix, 145 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany--Morphology.<br/>Plants--Evolution.<br/>Botany--Variation.