Acoustic emission/microseismic activity in geologic structures and materials :  proceedings of the fourth conference / 
edited by H. Reginald Hardy, Jr. 
 - Clausthal-Zellerfeld, Germany :  Trans Tech Publications,  1989. 
 - xi, 711 p. :  ill. 
<br/><br/><label>ISBN: </label>0878490817 
<br/><br/><label>LCCN: </label>91025027 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Acoustic emission.<br/>Acoustic emission testing.<br/>Rock mechanics.<br/>Fracture mechanics.