000 00298nam a2200121Ia 4500
008 150331s2012 xx 000 0 und d
100 _aKatiyar, S.
245 _aTelecommunication Networks
250 _a1 st
260 _aNew Delhi
_bS. K. Kataria and Sons
_c2012
300 _a438
942 _2ddc
_cBK
999 _c1950
_d1950