000 00326nam a2200121Ia 4500
008 200906s9999 xx 000 0 und d
082 _a622.2 S851
100 _aSTEWART,D.R
245 0 _aDESIGN AND OPERATION OF CAVING AND SUBLEVEL STOPING MINES
260 _bSOCIETY OF ENGG, NEW YORK
_c1981
300 _a28X23
942 _cBK
999 _c61104
_d61104