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18
Rebecca Wright, «Interview with Alan Lindenmoyer,» NASA Oral History Project, November 7, 2012.
19
T. A. Heppenheimer, «The Space Shuttle Decision» (NASA SP-4221) (Washington, DC: NASA History Office, 1999), accessed November 30, 2017, https://history.NASA.gov/SP-4221/ch8.htm.
