000 00271nam a2200109Ia 4500
008 220201s2018 xx 000 0 eng d
100 _aGupta, P K
245 0 _aOperations research
260 _aNew Delhi
_bS Chand
_c2018
650 _aOPERATIONS RESEARCH
942 _2ddc
_01
999 _c70477
_d70477