Proceedings 

 -  1968 
 - Natural resources research/Recherches sur les ressources naturelles; 7 .
<br/><br/><label>Standard No.: </label>89,630 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>GEOGRAPHY
<br/><br/><label>Dewey Class. No.: </label>U287OJp1:N66, K8