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100   $a20020821d1980----km-y0itay50------ba
101 0 $aeng
105   $ay-------001yy
200 1 $aSoftware maintenance management$estudy of the maintenance of computer application software in 487 data processing organizations$fBennet P. Lientz, E. Burton Swanson
210   $aReading, Mas.$cAddison-Wesley$d1980
215   $a214 p.$cill.$d24 cm
610 0 $aSoftware$aManutenzione
700  1$aLientz,$bBennet P.
701  1$aSwanson,$bE.B.
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