Small - scale mining  a guide to appropriate equipment 

 - London  ITP  1990 
 - xi,98 p.  Illustration 
<br/><br/><label>ISBN: </label>1853390127 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ENGINEERING<br/>MINING
<br/><br/><label>Dewey Class. No.: </label>622  / SMA