Hartman, Howard L <br/><br/>
Introductory mining engineering 

 - New York  John Wiley and Sons,c  1987 
 - xiii, 633p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>622--Mining engineering
<br/><br/><label>Universal Decimal Class. No.: </label>622  / HAR