Survey of world iron ore resources, occurrence, appraisal and use:   Report of a committee of experts appointed by the secretary-general 
/ United Nations, Department of Economic and Social Affairs 
 - New York:   United Nations, Department of Economic and Social Affairs,   1955 
 - xi, 344p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Iron mines and mining
<br/><br/><label>Subjects--Index Terms: </label>Iron ores 
<br/><br/><label>Universal Decimal Class. No.: </label>553.4(100)  / J5