000 00280nam a2200121Ia 4500
008 220201s1961 xx 000 0 eng d
082 _a621.38151
_bHIH
100 _aHihkel, K
245 0 _aMagnetrons
260 _aLondon
_bPhilips Technology
_c1961
300 _a93
942 _2ddc
999 _c12091
_d12091