Gopal Lal Jain <br/><br/>
Research methodology:methods tools and techniques 

 - 2nd ed. 
 - Jaipur  Mangal deep publications  2003 
 - 303p. 
<br/><br/><label>ISBN: </label>8175941278 
<br/><br/><label>Dewey Class. No.: </label>001.42  / GOP/R