00373nam a2200145Ia 4500008004100000020001500041041001200056082001600068100001800084245005400102260003100156300000800187650001600195700001600211221030s9999    xx            000 0 und d  a8176352586  aEnglish  a105.23bDer  aF. J. Derfler 0aHow Netrworks Workcby F. J. Derfler, L. N. Freed  bTechmediaaNew Delhic1999  a212  aBE Computer  aL. N. Freed