An Introduction to extension delivery system / 
Edited by Jaime B. Valera, Vicente A. Martinez, Ramiro F. Plopino. 
 - Manila :  Island Publishing House, Incorporated,  c1987. 
 - 188 pages ;  23 cm. 
<br/><br/> Includes references. 
<br/><br/><label>ISBN: </label>9711007088 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Extension.