Programme 

 - Hamburg :  The Society,  1986 
 - 144 p.  : ilus. 
<br/><br/><label>LCCN: </label>26837 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Suelos--Congresos.
<br/><br/><label>Dewey Class. No.: </label>631.4063  / C65p 1986