000 00341nam a2200145Ia 4500
005 20240713150314.0
008 240712s9999 xx 000 0 und d
020 _a9788121902816
041 _aeng
100 _aGupta, p.k.
245 _aOperations research
250 _a7th
260 _aNew Delhi
_b S.chand & co.
_c2018
300 _a1498
999 _c28358
_d28358