Acoustic emission/microseismic activity in geologic structures and materials proceedings of the fourth conference held at the Pennsylavania State University,october 22-24,1985 - Conference on Acoustic Emission/microseismic Activity in Geologic structures and material (4th : 1985 : Pennsylvania,USA); Hardy, H. Reginald (Henry Reginald), 1931- (Clausthal-Zellerfeld, Germany : Trans Tech Publications, 1989)
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Keywords: Acoustic emission -- Congresses; Microseisms -- Congresses; Geology