Singh, Uttam Kumar  &  Nayak, A. K. <br/><br/>
Extension Education 

 - Commonwealth, New Delhi  1997 
 - v, 204 
<br/><br/><label>ISBN: </label>81-7169-442-X 
<br/><br/><label>Dewey Class. No.: </label>370.194 Sin /Nay