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Training of Civil Aircraft Pilots

United States. U.S. Congress. House. Committee on interstate and foreign commerce

其他書名	Hearings...on H.R. 5093...Mar. 20, 27, 1939
出版	1939
URL	http://books.google.com.hk/books?id=bCJuOfVzNRMC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN