Ray, G. L. <br/><br/>
Extension communication and management 
G. L. Ray 
 - 5th ed. 
 - Ludhiana  Kalyani Publishers  2003 
 - 382p. 
<br/><br/><label>ISBN: </label>81-272-1170-2 
<br/><br/><label>Dewey Class. No.: </label> / RAY