00342nam a2200133Ia 4500008004100000040001600041041001200057082001700069100002200086245004100108250001200149260003000161300001700191230917s9999||||xx |||||||||||||| ||und||  e76452aMAIN  aEnglish  a004.65 P442C  aPeterson, Larry L 0aComputer networks: A system approach  a2nd ed.  aNew DelhibHarcourtc2002  axxvi, 748 p.