Harrison, J.H.  <br/><br/>
New concepts in flowering-plant taxonomy  (Book) 

 - London  William Heinemann  1953 
 - 135 p.  19 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany--Classification Botany--Variation
<br/><br/><label>Universal Decimal Class. No.: </label>582.4/.9 HAR  / 12899