Agricultural extension :  a reference manual / 
edited by Burton E. Swanson 
 - Second edition 
 - Rome :  Food and Agriculture Organization of the United Nations,  1984 
 - xi, 262 pages :  illustrations ;  29 cm 
<br/><br/><label>ISBN: </label>925101504X (paperback) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural extension work
<br/><br/><label>LC Class. No.: </label>S544 A37