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Parke, Davis and Company, manufacturing chemists, Detroit, Michigan. Alkaloid assay section in the analytical department
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineParke, Davis and Company, manufacturing chemists, Detroit, Michigan. Alkaloid assay section in the analytical department. 1943-01-01. Siegel, Arthur S.. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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