Sharma, A.K. and Sharma , Rajeshwari. <br/><br/>
Taxonomy 

 - Meerut  Pragati Prakashan  2007 
 - 142 
<br/><br/><label>ISBN: </label>81-8398-227-1 
<br/><br/><label>Dewey Class. No.: </label>581.012SHA/T