000 00329nam a2200133Ia 4500
008 221030s9999 xx 000 0 und d
041 _aEnglish
100 _aR. P. Singh
245 0 _aCommunciation Systems Analog and Digital
_cby R. P. Singh, S. D. Sapre
260 _c0
650 _aB
700 _aS. D. Sapre
942 _cBK
999 _c14191
_d14191