000 00403nam a2200157Ia 4500
008 170101s1969 xx 000 0 und d
082 _a621.38 H37I
100 _aHERRICK, Clyde N
245 0 _aIntroduction to electronics communications
260 _bColumbus,U.S
_c1969
300 _a688p
650 _aTELECOMMUNICATION
653 _aELECTRONICS
653 _aTELECOMMUNICATION
942 _2ddc
_cB
999 _c50278
_d50278