Singh , S.P. <br/><br/>
Vyakti or samuh ke sath samaj karya ant 

 - New Delhi  Gully Baba Publications  2017 
 - 386p. 
<br/><br/><label>ISBN: </label>9789382688600  200 
<br/><br/><label>Dewey Class. No.: </label>361.4 GPH P