00293nam a2200121Ia 4500008004100000020002200041100001800063245004000081260001200121260000900133300000800142650002100150221231s9999    xx            000 0 und d  a978-81-317-1543-7  aMir, Nader F. 0aComputer and Communication Networks  bPearson  c2009  a617  aComputer Science