000 00272nam a2200121Ia 4500
008 160921s9999 xx 000 0 und d
100 _aSINGH RP
245 _aCOMMUNICATION SYSTEMS (ANALOG& DIGITAL )
250 _a2nd
260 _bTMH
_c2009
300 _a584
942 _cBK
999 _c615
_d615