000 00309nam a2200121Ia 4500
008 211209s9999 xx 000 0 und d
041 _aeng
082 _aTHO
100 _aTHOMSON J
245 _aELECTRONICS, THE SERIES TEXTBOOK OF RADIO
260 _aMADRAS
_bUNITED STATES INFORMATION SERVICE
300 _a259
999 _c6632
_d6632