000 00304nam a2200121Ia 4500
008 220201s1956 xx 000 0 eng d
082 _a621.3
100 _aNoakes, GR
245 4 _aThe services text book of radio
260 _bLondon:Her Mejesty Stationary office
_c1956
300 _a645
942 _2ddc
999 _c75552
_d75552