Temario 

 - (s.p.i.),  (s.a.) 
 - (17) p. 
<br/><br/><label>LCCN: </label>26588 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultura--Congresos.
<br/><br/><label>Dewey Class. No.: </label>630.63  / C66t