Technology innovation in underground construction /  
edited by Gernot Beer 
 - Boca Raton [Fla.] :  CRC Press,   2010. 
 - xxiv, 504 p. :  ill. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>9780415551052 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Underground construction --Technological innovations
<br/><br/><label>LC Class. No.: </label>TA 712 TEC 2010