000 00337nam a2200145Ia 4500
008 200317s9999||||xx |||||||||||||| ||und||
020 _a8121902819
082 _a003
100 _aGupta, P.K.
245 0 _aOperations Research
250 _a1st
260 _aNew DELHI
_bS. Chand & Company Ltd
_c2019
300 _a1375p
942 _cBK
999 _c33735
_d33735