US policymakers confront aerospace doctrine, 1957–59.
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- Cold War History, 2014, v. 14, n. 1, p. 91, doi. 10.1080/14682745.2013.782536
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Works matching DE "X-20 (Space glider)"
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Hypersonic Technology and Aerospace Doctrine.
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- Air Power History, 1999, v. 46, n. 3, p. 4
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