000 00310nam a2200121Ia 4500
008 160710s1963 xx 000 0 und d
082 _a621.384 RID
100 _aRIDER,JOHN F.
245 _aRADIO AND TELEVISION HOW THEY WORK
260 _bJOHN F. RIDER PUBLISHER,INC.
_c1963
300 _a94
942 _2ddc
_cB
999 _c51909
_d51909