Singh Uttam Kumar, <br/><br/>
Extension education 
by Uttam Kumar Singh and A.K. Nayak 
 - Delhi  Commonwealth publishers  2017 
 - 204P. 
<br/><br/><label>ISBN: </label>81-7169-442-X 
<br/><br/><label>Dewey Class. No.: </label>T.44  / Q7