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020 _a9813091037
100 _aGroff, James R
245 0 _aUnderstanding unix : a conceptual guide
250 _a2
260 _aSingapore
260 _bTech
260 _c1988
300 _axiv, 234p.
500 _aIncludes index.
650 _aOperating system
650 _aOperating system -- Unix
700 _aWeinberg, Paul N
942 _cBK
999 _c401
_d401