Report of the Committee on Tungsten on its twenty-first session /  
report by UNCTAD secretariat. 
 - Geneva :    United Nations Conference on Trade and Development ,    1990 
 - 34 p. ;    30 cm. 
 - Trade and Development Board. Committee on commodities. Fourteenth se ssion. .
<br/><br/><label>Subjects--Topical Terms: </label><br/> Tungsten -- Congresses.<br/> Tungsten industry -- Congresses.