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Production and transportation costs of certain oils : letter from the chairman of the United States tariff commission transmitting in response to Senate resolution no. 323 (seventy-first congress), certain information relative to the costs of production and transportation to the principal consuming markets of the United States of certain oils and the principal uses thereof / [Robert L. O'Brien...et al.].
- Government Printing Office,
- 1932.
- Washington, DC :
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Seasonal trends of rubber production / Bureau of foreign and domestic commerce, U.S. department of commerce.
- 850.1
- Government Printing Office,
- 1932.
- Washington, DC :