Gocht, Werner <br/><br/>
Mineral resources and the environment :  the new concept of international commodity policy 

 - Colloquium Geographicum, 23 .
<br/><br/>bibliogr. p. 73-74 
<br/><br/><label>ISBN: </label>3427742318 
<br/><br/><label>ISSN: </label>05883253