World sulphur supply and demand 1960-1980 / 

 - New York :      UNIDO ,  1973 
 - xiii, 165p. ;  22 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mineral resources <br/>International trade<br/>Sulphur
<br/><br/><label>Dewey Class. No.: </label>333.8  / UNIDO