Rapid Excavation and Tunneling Conference (19th: 2009: Las V <br/><br/>
2009 Rapid Excavation and Tunneling Conference proceedings 
/ Rapid Excavation and Tunneling Conference 
 - 23 ed. 
 - Littleton  Society for mining, metallurgy, and exploration  2009 
 - xiv, 1386 p. 
<br/><br/> includes index 
<br/><br/><label>Dewey Class. No.: </label>624.19  / RAP