000 00330nam a2200145Ia 4500
008 200615s9999||||xx |||||||||||||| ||und||
020 _a9788121902816
082 _a510
_bOPE-P
100 _aPREM KR GUPTA
245 0 _aOPERATION RESERCH
250 _a6TH
260 _aNEW DELHI
_bS.CHAND
_c2017
300 _a1498
942 _cBK
999 _c30954
_d30954