00335nam a2200145Ia 4500008004100000041000800041082001500049100001500064245003600079250001300115260002200128300000800150365001600158700001500174230719s9999    xx            000 0 und d  aeng  a004.6bCOM  aComer D.E.  aComputer Networks And Internets  a 2nd ed.  bPearson Education  a578  cRs.b522.00  aComer D.E.