World sulphur supply and demand, 1960-1980 

 - New York  United Nations USA         1973 
 - xiii, 165p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrical
<br/><br/><label>Dewey Class. No.: </label>X 9 (E161):73.1.N80<-N60, L3/UN