000 00289nam a2200109Ia 4500
008 220120s9999||||xx |||||||||||||| ||und||
100 _aVishwanathan, B
_98002
245 0 _aTelecommunication switching
260 _aPrentiice hall of india
_c2001
300 _b0
650 _aCOMPUTER SCIENCE
999 _c137138
_d137138