000 00292nam a2200121Ia 4500
008 200701s2009 xx 000 0 eng d
100 _aKurso J F
245 0 _aComputer networking a top down approach
250 _a7th
260 _bPEARSON EDUCATION
_c2009
300 _a813
942 _2ddc
_cGE
999 _c4283
_d4283