Handbook of world mineral trade statistics 

 - New  York United Nations USA      1994 
 -  1990-95 .
<br/><br/><label>Standard No.: </label>88037 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Minings
<br/><br/><label>Dewey Class. No.: </label>"X9(HZ):54.1s, N9/UN"