Proceedings 

 - Paris  Unesco         1971 
 - 149p.  cm. 
 - Unesco's Natural Resources Research. 11. .
<br/><br/><label>Standard No.: </label>111611 
<br/><br/><label>Source: </label> Reports 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>"J:10gU28p192,N69, L1"