Boky, B. Scott, John <br/><br/>
Mining 

 -  Mir Pub  Moscow  1973 
 - 754 
<br/><br/><br/>En 
<br/><br/><label>Subjects--Topical Terms: </label><br/>  Mining
<br/><br/><label>Dewey Class. No.: </label>622  /  BOK