UNESCO <br/><br/>
Review of the natural resources of the African con 

 -  1963 
 - Natural resources research,1 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geoparphy
<br/><br/><label>Dewey Class. No.: </label>U671.467, J8