000			00558nam a2200109Ia 4500
008			130131s9999 xx 000 0 und d
100			_aDuck, Michael.
245			_aData communications and computer networks : for computer scientists and engineers / Michael Duck and Richard Read.
260			_bHarlow, England ; New York : Pearson/Prentice Hall, 2003. _aHarlow, England ; New York : PeaRed Sporton/Prentice Hall, 2003.
300			_axx, 415 p. : ill. ; 24 cm.
650			_aComputer networks. OSI (Computer network standard) Data transmission systems.
999			_c32136 _d31726