Penetration testing :  proceedings of 2nd European symposium on penetration testing 24-27 1982 / 
edited by A. Verruijt, F. L. Beringen, E. H. De Leeuw. 
 - Rotterdam :  A. A. Balkema,  1982. 
 - v. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>9061912504 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil mechanics.