Nature and resources Vol.19 No.4, Oct - Dec 1983 

 - Paris  UNESCO France         1983 
 - 41p.  cm. 
<br/><br/><label>Standard No.: </label>24127 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> ENVIRONMENTAL SCIENCE<br/>RESOURCES
<br/><br/><label>Dewey Class. No.: </label>G:55, M3