Proceedings 

 - (Paris) :  European Society for Agronomy,  1990 
 - c.a. 535 p.  ; gráfs 
<br/><br/><label>LCCN: </label>10059 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultura--Congresos.<br/>Agricultura--Europa--Europa.
<br/><br/><label>Dewey Class. No.: </label>630.094  / C6