Now showing items 1-6 of 6
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Duff, Russell Earl.; Hollyer, Robert N. (Robert Nelson) (1950)
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Duff, Russell Earl.; Hollyer, Robert N. (Robert Nelson) (1951)
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Hollyer, Robert N. (Robert Nelson); Duff, Russell Earl. (1951)
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Duff, Russell Earl. (The American Institute of Physics, 1952-12)
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Duff, Russell Earl. (American Institute of Aeronautics and Astronautics, 1952)
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