Sumaries of invited papaers & working papers 

 - Adelaide :  International Congress on Dryland Farming,  1980 
 - 2 v 
<br/><br/> Fotocopia 
<br/><br/><label>LCCN: </label>25898 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultura--Congresos.<br/>Agricultura--Regiones áridas.
<br/><br/><label>Dewey Class. No.: </label>631.0915  / I54