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Four letters from George Washington Carver (Tuskegee Institute) to Ira A. Manville (University of Oregon Medical School) regarding Manville's research into the nutritiona [...]
1936-1937 |
Text [general] |
Assorted archival collections |
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In some early work in which we were using a Vitamin A deficient diet, we experienced considerable difficulty which we attributed to variations in the Vitamin A factor i [...]
1922 |
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