00893nam0-22002891i-450-99000046867040332120100409135005.00201042053000046867FED01000046867(Aleph)000046867FED0100004686720020821d1980----km-y0itay50------baengy-------001yySoftware maintenance managementstudy of the maintenance of computer application software in 487 data processing organizationsBennet P. Lientz, E. Burton SwansonReading, Mas.Addison-Wesley1980214 p.ill.24 cmSoftwareManutenzioneLientz,Bennet P.Swanson,E.B.ITUNINARICAUNIMARCBK99000046867040332110 P.T. 32487 DISDINELDINELUNINA