000 00333nam a2200133Ia 4500
008 190706s9999 xx 000 0 und d
020 _a0-87335-102-9
082 _a622.12 S678
100 _aSOCIETY FOR MINING
245 0 _aSURFACE MINING ED.BY KENNEDY B.A
260 _aLITTLETON
_bSMME
_c1990
300 _a29X22
942 _cREF
_2DDC
999 _c7497
_d7497