000 00299nam a2200133Ia 4500
008 200615s9999||||xx |||||||||||||| ||und||
082 _a650
_bOPE-S
100 _aSHARMA,SD
245 0 _aOPERATION RESEARCH
250 _a1ST
260 _aNew Delhi
_bKEDAR NATH
_c2018
300 _a405
942 _cBK
999 _c27832
_d27832