00365nam a2200145Ia 4500003000400000005001700004008004100021020001800062082000800080100002200088245004000110250000900150260005000159300001000209TMU20250701162838.0160921s9999    xx            000 0 und d  a9780070589211  a004  aO'Brien, James A.  aIntroduction to Information Systems  a12th  bTata Mcgraw- Hill Publishingc2009aNew Delhi  a452p.