BLAKESLEE, A F <br/><br/>
Pigments of yellow-eyed races of black-eyed susan, Rudbeckia hirta.  [electronic resource] 

 -  Science (New York, N.Y.)  May 1948 
 - 458 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0036-8075 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rudbeckia