000 00316nam a22001337a 4500
020 _a9788121902816
082 _a519.5 GUP
100 _aGupta Kumar Prem
245 _aOperationd Research
260 _aNew Delhi
_bS Chand
_c2011
300 _a1418
650 _a9 Probabilities & applied mathematics
942 _cBK
999 _c6481
_d6481