Proceedings second conference on acoustic emission/microseismic activity in geologic structure and materials :  held at the Pennsylvania State University, University Park Pennsylvania, November 13-15, 1978 / 
H. Reginald Hardy, Jr. and Frederick W. Leighton conference sponsored by the Pennsylvania State University Rock Mechanics Laboratory. 
 - Clausthal-Zellerfeld, Germany :  Trans Tech Publications,  1980. 
 - 491 p. :  ill. ;  23 cm. 
 - Series on rock and soil mechanics ;  vol. 5 .
 - Series on rock and soil mechanics ;  vol. 5  .
<br/><br/> Includes list of participants. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0878490329 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Acoustic emission--Congresses.<br/> Microseimic--Congresses.<br/> Geology, Structural--Congresses.