Gurudev,Singh <br/><br/>
Research Methods : For Library Science Professionals 
by Gurudev Singh 
 - New Delhi  Ess Ess Publishing  2018 
 - 373 
<br/><br/><label>ISBN: </label>Gurude 
<br/><br/><label>Dewey Class. No.: </label>020.72 GUR/RES