Extension service review/ 
issued monthly by the United States Extension Service Department of Agriculture 
 - Washington, D.C. :  U.S. Department of Agriculture, Extension Service,  1930-1978 
 - v. :  ill., ports. ;  29 cm. 
<br/><br/> Cover title  Library has vol 47, no.3 
<br/><br/>Issued by: the Extension Service, 1930-Nov. 1954; the Federal Extension Service, Dec. 1954-Mar. 1970; the Extension Service, Apr. 1970-1978. 
<br/><br/><label>ISSN: </label>0014-5408 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--Research--United States
<br/><br/><label>Dewey Class. No.: </label>630.72073