000 00278nam a2200121Ia 4500
008 200701s2013 xx 000 0 eng d
100 _aSINGH
245 0 _aPRINCIPLES AND PRACTICES OF COAL MINING
250 _a1st
260 _bNEW AGE
_c2013
300 _a696
942 _2ddc
_cGE
999 _c5330
_d5330