Plant systematics :  an integrated approach / 
Gurcharan Singh. 
 - 561 pages :  illustrations ;  25 cm. 
<br/><br/><label>ISBN: </label>1578083427 
<br/><br/><label>ISSN: </label>0080-0694 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plants--Classification.<br/>Plants--History.--Classification<br/>Plants--Phylogeny.