Economic aspects of iron-ore preparation. 

 - Geneva :  UN,  1966 
 - xiv, 280p. :  ill. ;  30 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural resources<br/>Iron Ore<br/>Ore-dressing<br/>Minerals
<br/><br/><label>Dewey Class. No.: </label>553.1  / ECE-3