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Results of the First U.S. Manned Orbital Space Flight, February 20, 1962

Manned Spacecraft Center (États-Unis)

出版	U.S. Government Printing Office, 1962
URL	http://books.google.com.hk/books?id=KsE8AAAAIAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN