TY - GEN AU - Leighton,Frederick W. AU - Hardy,H.Reginald ED - Pennsylvania State University. Rock Mechanics Laboratory. ED - Conference on Acoustic Emission/Microseismic Activity in Geologic Structures and Materials (1st : 1975 : Pennsylvania State University, Pennsylvania). TI - Acoustic emission/microseismic activity in geologic structures and materials: proceedings of the first conference SN - 0878490175 PY - 1977/// CY - Clausthal-Zellerfeld, Germany PB - Trans Tech Publications KW - Acoustic emission KW - Acoustic emission testing KW - Rock mechanics KW - Fracture mechanics N1 - Bibliography: p. 467-484 ER -