Echinacea  the genus echinacea 
edited by Sandra Carol Miller. 
 - Boca Raton  CRC Press  2012 
 - 276p.: ill.; 24cm. 
 - (Medicinal plants of the world .13). .
<br/><br/><label>ISBN: </label>9780415288286 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Medicinal plants Echinacea - Therapeutic use. 
<br/><br/><label>Dewey Class. No.: </label>615.321  / E21E