00414nam a2200169Ia 4500001000700000003000400007008004500011010001100056041001400067100002300081245004600104250001000150260004100160300001100201650001600212082001600228017918LIB220712b2008        py ||||| |||| 00| 0 spa d  a017918  aEspañol  aHalvorson, Michael  aMicrosoft visual basic 2008: step by step  a[S.n]  bMicrosoft Press,aWashington :c2008  a544 p.  aINFORMATICA  a001.6425 VB