00422nam a2200157Ia 450000100060000000800410000602000180004704000130006508200190007810000180009724500790011526000090019430000110020354600070021465000430022113450140402s9999    xx            000 0 und d  a0-471-17732-6  cPK-LaUMT  a 004.68bHEL-V  aHeld, Gilbert  aVirtual LANs : Construction, implementation, and managementcHeld, Gilbert  c1997  a321 p.  aEN  aLocal area networks(Computer networks)