00620cam a22002052  4500001001100000005001700011008004100028020001700069040001500086050002100101100003100122245006800153250001200221260004000233300001700273650004800290650004000338700003300378852000300411000002383120151217152249.0130403s         xx           000 0 eng d  a0071285490 :  aKABUcKABU 0aT58.6b.H33 20091 aHaag, Stephen.@000015605410aInformation systems essentials /cStephen Haag, Maeve Cummings.  a3rd ed.  aBoston :bIrwin/McGraw-Hill,c2009.  axxix, 429 p. 0aManagement information systems.@0000148209 0aInformation technology.@00001502871 aCummings, Maeve.@00001560551