000 00451nam a2200181Ia 4500
008 160910s9999 xx 000 0 und d
020 _aNULL
040 _cSGVU Library
041 _cEng.
100 _aShay, W.A.
245 _aUnderstanding data communication & networks.
_cBy W.A. Shay
250 _aNULL
260 _aNULL
_bVikash pub House, U.K.
_cNULL
300 _aNULL
520 _aEngineering
650 _aElectronics
942 _cBOOKS
999 _c5564
_d5564