000 00277nam a2200109Ia 4500
008 190914s9999||||xx |||||||||||||| ||und||
100 _aP V Sreekanth
245 0 _aDigital Transmission Hierarchies and Networks
260 _aCanada
_bPearson
_c2001
300 _a577
942 _cBK
999 _c9848
_d9848