000 00326nam a2200121Ia 4500
008 160710s1940 xx 000 0 und d
082 _a621.384 GRE
100 _aMINISTRY,AIR
245 _aELECTRICAL AND RADIO NOTES FOR WIRELESS OPERATORS
260 _bHERMAJESTYS STATIONERY OFFICE
_c1940
300 _a220
942 _2ddc
_cB
999 _c19410
_d19410