ARMSTEAD;TESTER,J.W. <br/><br/>
Heat Mining 

 - UK  1987 
 - 478 p.  35 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0-419-12230-3 
<br/><br/><label>Dewey Class. No.: </label>