000 00348nam a2200157Ia 4500
008 190201s9999 xx 000 0 und d
082 _a621
082 _b38043
100 _a"Carlson, A Bruce"
245 0 _aCommunication Systems
250 _aThird
260 _aNew Delhi
260 _bMcGraw Hill
260 _c1978
300 _a"xvii, 686"
999 _c30729
_d30729