000			00297nam a2200121Ia 4500
008			160122s9999 xx 000 0 und d
041			_aEnglish
100			_aDouglas E Comer
245			_aComputer networks and networks
260			_bDelhi:Pearson Pub. _c2002
300			_a578p.
650			_aComputer
999			_c4602 _d4602