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Untitled photo, possibly related to: Doctor O.R. Sweeney, head of chemical and mining engineering, has been at the college for twenty years. He has been outstanding in developing byproducts from agricultural wastes. Iowa State College. Ames, Iowa
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Credit lineUntitled photo, possibly related to: Doctor O.R. Sweeney, head of chemical and mining engineering, has been at the college for twenty years. He has been outstanding in developing byproducts from agric. 1935-01-01. Delano, Jack. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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Doctor O.R. Sweeney, head of chemical and mining engineering, has been at the college for twenty years. He has been outstanding in developing byproducts from agricultural wastes. Iowa State College. Ames, Iowa
Doctor O.R. Sweeney, head of chemical and mining engineering, has been at the college for twenty years. He has been outstanding in developing byproducts from agricultural wastes. Iowa State College. Ames, Iowa
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