000			00388nam a2200157Ia 4500
008			220709b1958 xxu||||| |||| 00| 0 eng d
082			_a621.3843 _bK20F
100			_aKeen, A.W.
245			_aFrequency modulation and introduction to the fundamental principles
260			_aLondon _bSir Isaac Pitman _c1958
300			_axii, 274
500			_aDormitory
964			_bEnglish
964			_ePaper Fo
942			_cBooks
906			_a51068
981			_aLondon: Sir Isaac Pitman, 1958.
982			_axii, 274
983			_aFrequency modulation and introduction to the fundamental principles
999			_c50762 _d50762