Robinson, Harold. <br/><br/>
Chromosome numbers in Compositae, XII ; Heliantheae 

 - Washington :  Smithsonian Institution,  1981 
 - 28 p. 
 - Smithsonian contributions to botany  ; 52 .
 - Smithsonian contributions to botany  ; 52 .
<br/><br/><label>LCCN: </label>49448 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Compuestas<br/>Cromosomas.<br/>Genética vegetal.