Natural resources and development 
/ Institute for Scientific Co-operation 
 - Tübingen   : Institute for Scientific Co-operation  , c. 1975-c. 1999 
 - vols. 51 
<br/><br/> A biannual collection of recent German contributions concerning the exploration and exploitation of natural resources 
<br/><br/><label>Standard No.: </label>0340-2797