YK Singh <br/><br/>
Research methodology: data presentation/by YK Singh and RB Bajpai 

 - vol 2 
 - New Delhi  APH Publishing corporation  2007 
 - 246p. 
<br/><br/><label>ISBN: </label>9788131302576 
<br/><br/><label>Dewey Class. No.: </label>370.072  Si64R