Metal mine fire protection research: proceedings, Bureau of mines Technology Transfer Seminar, Tucson, Ariz, March 18, 1977 
U.S. Bureau of mines. 
 - Washington  Bureau of mines.  1977 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA
<br/><br/><label>Universal Decimal Class. No.: </label>622(063)