Dittmer, Howard J <br/><br/>
Phylogeny and form in the plant kingdom / 
Dittmer, Howard J 
 -  D Van Nostrand Co., London,  1968 
 - p. ;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plants; Botany
<br/><br/><label>Dewey Class. No.: </label>580 DIT-P