Experimental methods for extension workers 

 - Berkeley :  (s.e.),  1963 
 - pag. varía 
<br/><br/><label>LCCN: </label>70651 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultura--Estadisticas.<br/>Extensión agrícola.
<br/><br/><label>Dewey Class. No.: </label>311.2  / C35