Coal age operating handbook of underground mining 

 - New York:   MMcgraw-Hill,   1977 
 - vi, 410p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science 
<br/><br/><label>Subjects--Index Terms: </label>Mining  
<br/><br/><label>Universal Decimal Class. No.: </label>R 622.33:622.8(02)  / L7