000 | 00358nam a2200121Ia 4500 | ||
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008 | 190711s9999 xx 000 0 und d | ||
082 | _a622.206 I59 | ||
100 | _aINSTITUTION OF ENGINEERS | ||
245 | 0 | _aPROCEEDINGS OF THE SIXTH NATIONAL SYMPOSIUM ON ROCK MECHANICS | |
260 |
_aK.G.F. _bINSTITUE OF ROCK MECHANICS _c1992 |
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300 | _a25X18 | ||
942 |
_cBK _2DDC |
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999 |
_c23267 _d23267 |