Similar descriptions indexed in Engineering Index 1941 p 81, from various sources.
Washington national airport
Flight
Flight ; 40 , n 1718
1941
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1940
Engineering Index Backfile | 1940
Engineering Index Backfile | 1941
Engineering Index Backfile | 1941
|Lighting at Washington National Airport
Engineering Index Backfile | 1942
|