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020 _aNCST
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040 _aMAIN
082 _a774
100 _aPALMER,IAN R
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245 0 _aDATABASE SYSTEMS: A PRACTICAL REFERENCE
250 _a1
260 _bOTH
_c1975
_aWELLESLEY,MA
942 _cBK
999 _c45739
_d45739