Nilsen, Bjorn & Thidemann, Alf. <br/><br/>
Hydropower development :  rock engineering / 

 - Norway :  Norwegian institute of Technology. ,  1993 
 - 156 p. :  ill. ;  30 cm. 
 -  v. 9 .
<br/><br/><label>ISBN: </label>8275980178 
<br/><br/><label>LC Class. No.: </label>D4350 
<br/><br/><label>Dewey Class. No.: </label>624.15132  / NIL