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020 _a9054103167
082 _a622.2 R837
100 _aROSSMANITH,H.P
245 0 _aROCK:FRAGMENTATION BY BLASTING
260 _aNETHERLANDS
_bA.A. Balkema
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300 _a25X18
942 _cBK
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999 _c23516
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