000 00263nam a22001097a 4500
999 _c338116
_d338116
020 _a9788120351745
082 _a338.2
_bRAY.M
100 _aSubhash C.Ray and Indra N. Sinha
245 _aMine and Mineral Economics
260 _aNewDelhi
_bPHI
_c2016
942 _cBK