Jumikis Alfreds. <br/><br/>
Rock mechanics / 
Jumikis Alfreds. 
 - 2nd ed. 
 - Clausthal-Zellerfeld :  Trans Tech Publications,  1983. 
 - 613 s. : il.,rys. ;  24cm. 
<br/><br/><label>ISBN: </label>0878490388 
<br/><br/><label>Universal Decimal Class. No.: </label>531  624.04