Singh, V <br/><br/>
Text book of botany diversity and systematics of seed plants 

 - 2nd 
 - Meerut  Rastogi Publications  2004 
 - 344 
<br/><br/><label>ISBN: </label>81-7133-707-4 
<br/><br/><label>Dewey Class. No.: </label>582 Si64D