00324    a2200121   4500020001800000050002100018100001900039245005900058264003200117300001000149500001900159650002400178  a9780073376837  aHD 30.2 BAL 2011  aBaltzan, Paige  aInformation systems /cPaige Baltzan and  Amy Phillips  aNew YorkbMcGraw-Hillc2011  a355p.  aincludes index  aInformation systems