000 00321nam a2200133Ia 4500
020 _a9788121902816
082 _a658.4034 GUP/O
100 _aGupta, Prem Kumar
245 0 _aOperations Research
260 _bS. Chand & Company
_aNew Delhi
_c2013
650 _aOperations Research
700 _aHira, D. S.
942 _cBK
999 _c5297
_d5297