Proceedings :  Second Conference on Acoustic Emission/Microseismic Activity in Geologic Structures and Materials, held at the Pennsylvania State University, University Park, Pennsylvania, November 13-15, 1978 / 
 Acoustic emission/microseismic activity in geologic structures and materials 
edited by H. Reginald Hardy, Jr. and Frederick W. Leighton. 
 - Clausthal, Germany :  Rockport, Me. :  Trans Tech Publications ;  Distributed in North America by Karl Distributions, Trans Tech Publications,  1980. 
 - ix, 491 pages :  illustrations. 
<br/><br/> Sponsored by the Pennsylvania State University, Rock Mechanics Laboratory. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0878490329 9780878490325 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Acoustic emission--Congresses.<br/>Microseisms--Congresses.<br/>Rock mechanics--Congresses.
<br/><br/><label>Dewey Class. No.: </label>624.151