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Start Over Formats Text ✖Remove constraint Formats: Text Collections World War 2, 1939-1949 ✖Remove constraint Collections: World War 2, 1939-1949 Subjects Military Personnel ✖Remove constraint Subjects: Military Personnel Subjects Physiology ✖Remove constraint Subjects: Physiology Authors Baldes, E. J. (Edward James), 1898- author ✖Remove constraint Authors: Baldes, E. J. (Edward James), 1898- author Titles Studies in aviation medicine ✖Remove constraint Titles: Studies in aviation medicine Copyright Public domain ✖Remove constraint Copyright: Public domain Publication Year 1940 ✖Remove constraint Publication Year: 1940

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