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100   $a20121019d1977----km-y0itay50------ba
101 0 $aeng
102   $aDE
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200 1 $aProceedings first conference on acoustic emission/microseismic activity in geologic structures and materials$ePennsylvania, June 9-11 1975$fH. Reginald Hardy, Jr.$gFrederick W. Leighton
210   $aGermania$cTrans tech Publications$d1977
215   $a489 p.$cill.$d22 cm
225 1 $aSeries on rock and soil mechanics$v2
610 0 $aIngegneria sismica
610 0 $aDinamica delle terre e delle rocce
700  1$aHardy,$bH. Reginald Jr.$0517834
701  1$aLeighton,$bFrederick W.$0517938
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996   $aProceedings first conference on acoustic emission$9847736
997   $aUNINA