000 00326nam a2200121Ia 4500
008 190711s9999 xx 000 0 und d
082 _a622.2 S999
100 _aSZWILSKI,A.B
245 0 _aUNDER GROUND MINING METHODS AND TECHNOLOGY(ENGLAND)(1986)
260 _aAmsterdam
_bElsevier
_c1987
300 _a25X18
942 _cBK
_2DDC
999 _c21399
_d21399