Ravi Krishna, Modugula <br/><br/>
Examination system 

 - New Delhi  Discovery Publishing House  2004 
 - 403p. 
<br/><br/><label>ISBN: </label> RS 825.00 
<br/><br/><label>Source: </label> RS 825.00 
<br/><br/><label>Dewey Class. No.: </label>371.262 RAV