00340    a2200121   4500020001500000082001600015100002200031245005000053250001000103260004300113300002200156650004000178  a0131454498  a005.71bPAN  aPanko, Raymond R.  aBusiness data networks and telecommunications  a14th   aNew JerseybPrentice- Hallc2005g2004  axxx, 588p.c24cm.  aDATA PREPARATION AND RECORD FORMATS