Natural Resources and Development 
 Vol : 3, 4, 5, 13, 15, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 28, 29 
by Institute For Scientific Co-Operation 
 - 1st Ed.   Rep. 
 - [s.l]:  Federal Republic Of Germany,  1976. 
 - 117p.:  20cm. 
<br/><br/><label>Subjects--Index Terms: </label>General serial publications, Journal. 
<br/><br/><label>Dewey Class. No.: </label>050