Public domain
Forest Products Laboratory, Madison, Wisconsin. Testing the tensile strength of impregnated paper board in the timber mechanics department
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineForest Products Laboratory, Madison, Wisconsin. Testing the tensile strength of impregnated paper board in the timber mechanics department. 1942-01-01. Delano, Jack. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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