000 00300nam a2200121Ia 4500
008 190107s9999 xx 000 0 und d
020 _a9780070634145
100 _aBehrouz A. Forouzan
245 0 _aData communicationsand networking 4th editon
260 _bMcGraw Hill
365 _b675/-
942 _cBK
999 _c384
_d384