Weak Rock : Soft, Fractures And Weathered Rock - Volume 1 / 
edited by Koichi Akai, Masao Hayashi, Yuichi Nishimatsu 
 - Amsterdam :  A. A. Balkema,  1981 
 - viii, 600 pages .:  graph, illustrations .;  25 cm 
<br/><br/> Proceedings of the International Symposium on Weak Rock, Tokyo / 21-24 September 1981 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>9061912067  RM 792.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rocks--Congresses
<br/><br/><label>Dewey Class. No.: </label>552.1  / WEA 1981