000 00395nam a2200169Ia 4500
100 _aDanilson/ G.L/ Walker /R.S
650 _aElectrical Engineering
490 _vI
942 _cBK
654 _aTelicommunications System
245 _aTelicommunications System
260 _bButterworths
_aLondon
_c1979
082 _a621.3
_bDan/Wal
300 _a103
546 _aENGLISH
999 _c24320
_d24320