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 
 - Netherland  A.A. Balkema  1981 
 - ix, 603-1326p. : ill. ; 25 cm. 
<br/><br/> Proceedings of the international symposium on weak rock Tokyo/21-24,September 1981 
<br/><br/><label>ISBN: </label>9789061912071 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rock mechanics
<br/><br/><label>Dewey Class. No.: </label>624.15132 AKA