Johansen, Harley E. <br/><br/>
Mineral resource development 

 -  Boulder  Westview press  1987 
 - 369p  PB 
 - Mineral resource development .
<br/><br/><br/>En 
<br/><br/><label>Subjects--Personal Names: </label><br/>Economics
<br/><br/><label>Dewey Class. No.: </label>333.8515  /  JOH