00468nam a2200157Ia 4500008004100000041001200041082000600053100001600059100001100075245011100086260000900197260002700206260000900233300006200242650000600304150909s9999    xx            000 0 und d  aEnglish  b-  aHardy H.R    eEditor  aProceedings first conference on acoustic emmision micraseismie activity in geologic structures materials *  aOhio  bTran Tech Publications  c1977  a-                                                   Pages  a-