000 00289nam a22001337a 4500
020 _a9788121902816
100 _aPrem Kumar Gupta
245 _aOperations research
250 _a7th
260 _aNew Delhi
_bS.Chand & Co.
_c2015
300 _axii+1498
700 _aHira DS
942 _cBK
999 _c58863
_d58863