Robinson, Harold Ernest    1932- <br/><br/>
Generic and subtribal classification of American Vernonieae /    
Har old Robinson. 
 - Washington, D.C. :   Smithsonian Institution Press,   1999. 
 - iii, 116 p. :    ill. ;    28 cm. 
 - Smithsonian contributions to botany ;   no. 89. .
<br/><br/>Includes bibliography : p. 111-116. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Vernonia ----United States ----Classification.