00479nam a2200097Ia 4500008004100000050002300041100001900064245009800083247011900181264008100300230508s2007    xx            000 0 und d  aTK 5105.5 W45 20071 aWhite, Curt M.10aData communication and computer networks : ba business user approach 4th ed.cWhite, Curt M.  aData communication and computer networks : a business user approach 4th ed._TK 5105.5 W45 2007_White, Curt M._2007  a[Place of publication not identified] : bThomson Course Technology, c2007.