00384cam a2200169   450000500170000024500390001702000150005610000230007104400130009425000090010704100080011630000230012450000050014783000050015226000390015708200180019620260711133913.0  aInformática: Presente y futurob  a9684515677  aSanders, Donald H.  aMéxico  a1ª   aspa  a670 p. il.; 24 cm.  a  v  aMéxico D.F. bMc Graw Hillc1985  a004.02bS215i