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_aBy Gupta, P K _93004 |
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| 245 | 0 | _aOperations research | |
| 250 | _a7th | ||
| 260 |
_c2018 _bS.Chand & Company Pvt. Ltd., 2015. _aNew Delhi |
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| 300 | _axi, 1498p. | ||
| 650 |
_aOperations research _91538 |
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| 650 |
_aOperations research _91538 |
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_c9777 _d9777 |
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