000 00231 a2200097 4500
001 15012
100 _aSmith J.R.G
245 _aElementary telecom practice
260 _aLondon
_bEnglish university press
_c
090 _c11767
_d11767
942 _aNUST-CAE
_cM
_c1966
999 _c250085
_d250085