000 00279nam a22001217a 4500
082 _a621.384 MAR'E
100 _aMARCUS, WILLIAM,MARCUS, ABRAHAM
_956540
245 _aELEMENTS OF RADIO
250 _a4th
260 _aLONDON
_bGEORGE ALLAN
_c1959
300 _a667P
942 _cBK
999 _c566931
_d566931