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by National Aeronautics and Space Administration; Gawdiak, Ihor; Fedor, Helen
by Lazutin, Fedor; Sharashkin, Leo, Ph.D.; Pettus, Mark, Ph.D.
by Dostoievski, Fedor
by Dostoïevski, Fedor
by Sapegin, Fedor
by Fedor; Ghosh
by American Academy of Orthopaedic Surgeons (AAOS); Hafter, Jacob; Fedor, Victoria