000 00319nam a2200109Ia 45e0
008 181001s1947 xx 000 0 und d
100 _aReyner J.H.
245 0 _aModern Radio communication
260 _aLondon
_bPitman London
_c1947
300 _a340
942 _2ddc
_cBK
999 _c821
_d821