Tiwari, Purushotham. <br/><br/>
Digital library / 
by.Purushotham Tiwari. 
 - ed. 
 - New Delhi :  APH Publishing Corporation,  2011. 
 - viii,285  pages ;  cm. 
<br/><br/>Includes Bibliography. 
<br/><br/><label>ISBN: </label>8131300366 :  $35.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Digital library.