000 00282nam a2200109Ia 4500
008 220120s9999||||xx |||||||||||||| ||und||
100 _aFlood, J.E
245 0 _aTelecommunication switching
260 _aPearson education of asia
_bBangalore
_c2004
300 _b0
650 _aCIRCUIT
999 _c137110
_d137110