000
nam a22 7a 4500
999
_c
14201
_d
14201
020
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9788121902816
082
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658.4034
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GUP
100
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GUPTA PREM KUMAR
245
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OPERATIONS RESEARCH
250
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1ST
260
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NEW DELHI
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S.CHAND AND CO
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2016
300
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1498
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P.B
700
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HIRA D.S
942
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LEN_BK