000 00519nam a2200181Ia 4500
008 150909s9999 xx 000 0 und d
041 _aEnglish
082 _b-
100 _aHardy H.R
100 _eEditor
245 _aProceedings first conference on acoustic emmision micraseismie activity in geologic structures materials *
260 _aOhio
260 _bTran Tech Publications
260 _c1977
300 _a- Pages
650 _a-
942 _cREF
999 _c203268
_d203268