Jones E M M <br/><br/>
British knapweeds: A study in synthetic taxonomy 

 -  1954 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>50297 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany
<br/><br/><label>Dewey Class. No.: </label>I:11.3, J4;1