000 00336nam a2200133Ia 4500
008 190711s9999 xx 000 0 und d
020 _a8120404904
082 _a622.33 S617
100 _aSINGH,T.N
245 0 _aUNDERGROUND WINNING OF COAL
260 _aNEW DELHI
_bOxford & IBH Publishing
_c1992
300 _a24X16
942 _cBK
_2DDC
999 _c22958
_d22958