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What is the missing number?

Correct answers: 246

The first user who solved this task is Donya Sayah30.

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U.S. Air Corps Physiological Research Unit

In 1935, the U.S. Physiological Research Unit laboratory was established at Wright Field, Ohio, under the leadership of Capt. Harry G. Armstrong, M.C. (Medical Corps). Pioneering aeromedical research work was conducted here on health and safety aspects while in flight. On 1 Jan 1937, it became the U.S. Air Corps Physiological Research Laboratory, with improved facilities.«

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