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3 résultats pour : testing baseballs

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The United States Government Air Gun for testing the velocity of baseball at Griffith Stadium circa 1938.
UMG21A21_352

The United States Government Air Gun for testing t...

Government Waste - Bureau of Standards designs mechanical batter to determine liveliness of baseballs, an example of government wasting money during the Great Depression circa 1938 .
UMG21A21_350

Government Waste - Bureau of Standards designs mec...

Government Waste - Bureau of Standards designs mechanical batter to determine liveliness of baseballs, an example of government wasting money during the Great Depression circa 1938 .
UMG21A21_351

Government Waste - Bureau of Standards designs mec...