Before Am Inst Elec Engrs, indexed in Engineering Index 1940 p 328, from Elec Eng Dec 1940, under heading of Direction Finding Apparatus, Radio. (See also - n 4449 Apr 18 1941 p 255-6)
Instrument landing of aircraft
Engineer
Engineer ; 171 , n 4450
1941
2 pages
Article (Journal)
English
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Instrument landing systems for aircraft
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