00451nam a2200157Ia 4500008004100000020000700041082001400048100002200062245003900084250000700123260005900130300002600189500000700215600002100222650005000243240925s9999    xx            000 0 und d  aNA  a004.6 MUR  aMurphy, Donald E. 0aIntroduction to Data Communication  aNA  aNew York:bInternational Bussiness Corporationc,1968.  aix,79p.bNAfOriginal  aNA  aComputer Science  aComputer science, information & general works