BULLOCK,R.L <br/><br/>
RAPID EXCAVATION AND TUNNELING CONFERENCE PROCEEDINGS (SAN FRANCISCO) VOL.I 

 - NEW YORK  SME  1981 
 - 24X16 
<br/><br/><label>ISBN: </label>0895202832 
<br/><br/><label>Dewey Class. No.: </label>622.2606 B938