INSTITUTION OF MINING AND METALLURGY AND BRITISH TUNNELLING <br/><br/>
TUNNELLING 94, SEVENTH INTERNATIONAL SYMPOSIUM PROCEEDINGS 

 - LONDON  Chapman Publishing Ltd  1994 
 - 24X16 
<br/><br/><label>ISBN: </label>0412598604 
<br/><br/><label>Dewey Class. No.: </label>622.26 I59