Hartman,Howard L <br/><br/>
Introductory Mining Engineering 

 - 1st 
 -  John Wiley,Newyork  1987 
<br/><br/> REFERENCE 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mining Engg. Mechanical 
<br/><br/><label>Dewey Class. No.: </label>