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NASA's commercial space programs : hearing before the Subcommittee on Space of the Committee on Science, Space, and Technology, US House of Representatives, One Hundred Third Congress, first session, October 20, 1993
(1994)
Access to space : the future of US space transportation systems
(1990)
Astrobusiness : a guide to the commerce and law of outer space
Finch, Edward R., (1984)