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A.S.T.M. standards on rubber products : methods of testing specifications / prep. by Committee D-11 on rubber products.
- American Society for Testing Materials,
- 1937.
- Philadelphia, PA :
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The Sherbro of Sierra Leone : a preliminary report on the work of the University museum's expedition to West Africa, 1937 / by H.U. Hall.
- University of Pennsylvania Press,
- 1938.
- Philadelphia, PA :