Weak Rock : soft, fractured and weathered rock : proceedings of the international symposium on weak rock, Tokyo, 21-24 September 1981 
edited by Koichi Akai, Masao Hayashi and Yuichi Nishimatsu 
 - Rotterdam  A.A. Balkema  1981 
 - 3 v. (viii, 1524 p.) : ill. ; 26 cm. 
<br/><br/> Proceedings of the international symposium on weak rock Tokyo/21-24,September 1981 
<br/><br/><label>ISBN: </label>9789061912064 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rock mechanics
<br/><br/><label>Dewey Class. No.: </label>624.15132 AKA