000 00279nam a2200109Ia 4500
008 200615s9999||||xx |||||||||||||| ||und||
082 _a622
_bSUR-S
100 _aSAMIR KUMAR DAS
245 0 _aSURFACE MINNING TECHNOLOGY
260 _anew delhi
_bLOVELY PRAKASHAN
_c2017
942 _cBK
999 _c29751
_d29751