000 00283nam a2200121Ia 4500
008 160710s1947 xx 000 0 und d
082 _a621.383 SAN
100 _aSANDEMAN,E.K.
245 _aRADIO ENGINEERING
260 _bCHAPMAN & HALL LTD.
_c1947
300 _a775
942 _2ddc
_cB
999 _c7534
_d7534