Ray, G L  Mondal, Sagar <br/><br/>
Research Methods in Social Sciences and Extension Education 

 - NEW DELHI  Kalyani Publishers  2023 
 - 330p. 
<br/><br/><label>ISBN: </label>9788127267469 
<br/><br/><label>Dewey Class. No.: </label>300.72  / RAY/RE