000 00262nam a2200109Ia 4500
008 220120s9999||||xx |||||||||||||| ||und||
082 _a621.382 FLO
100 _aFlood, J.E
245 0 _aTelecommunication switching
260 _bNew Delhi
300 _a886p.
_b225
999 _c136309
_d136309