Proceedings on use and conservation of the biosphere 

 -  1970 
 - 272p.  cm. 
 - Natural resources research; 10 .
<br/><br/><label>Standard No.: </label>44609 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Conservation
<br/><br/><label>Dewey Class. No.: </label>G:527p1:N68, L0