00369nam a2200145Ia 450000100060000000800410000602000180004704000130006508200170007810000190009524500550011426000360016930000110020554600070021630511140416s9999    xx            000 0 und d  a0-85296-804-3  cPK-LaUMT  a 004.6bDAT-  aR. L. Brewster  aData communications and networks 3cR. L. Brewster  aHoboken,USA:bIEEE Press,c1994  a237 p.  aEN