Rao, Nyasavajjala Nageseara <br/><br/>
Computer aided design of support system for underground openings 

 - Roorkee  Deptt. of Civil Engg.University of Roorkee  1994 
 - 70p  28cm.  Index Term-Uncontrolled 
<br/><br/><label>Dewey Class. No.: </label>624.072  / RAO