000 00286nam a2200097Ia 4500
008 160930s9999 xx 000 0 und d
100 _aViswanathan, Thiagarajan
245 _aTelecommunicaiton Switching Systems and Networks
260 _aNew Delhi
_bPrentice Hall of India P.L.
942 _cBK
999 _c1792
_d1792