000 00312nam a2200145Ia 4500
008 220105s9999 xx 000 0 und d
041 _aENGLISH
082 _a621.382
100 _a"Singh, R.P."
245 0 _aCommunications Systems
250 _n2
260 _bMcGraw-Hill
365 _b265
942 _cBK
999 _c194390
_d194390