000 00301nam a2200121Ia 4500
008 160710s1935 xx 000 0 und d
082 _a621.384 R 56 C
100 _aRIDER JOHN F.
245 _aTHE CATHODE-RAY TUBE AT WORK
260 _bJOHN F. RIDER PUBLISHER
_c1935
300 _a336
942 _2ddc
_cB
999 _c5935
_d5935