Evaluation in extension. 
[Prepared by Laurel K. Sabrosky and others. 
 - 3d ed.] Prelim. 
 - [Washington,  U.S. Govt. Print. Off.]  1956. 
 - iv, 84 p.  illus.  26 cm. 
<br/><br/> Cover title.  Published in 1949 by the Division of Field Studies and Training of the Service under its former name, Extension Service, under title: Extension evaluation; what it is, how it is done, its use. 
<br/><br/>Bibliographical footnotes. 
<br/><br/><label>LCCN: </label>agr56000186  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural extension work.
<br/><br/><label>LC Class. No.: </label>S544  / .A5144 1956