000 00257nam a2200109Ia 4500
008 190719s9999 xx 000 0 und d
100 _aAndrew S Tanenbaum
245 0 _aComputer networks
250 _a4th
260 _aDelhi
_bPearson Edu
_c2003
942 _cBK
999 _c11204
_d11204