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Subject
- United States. Board of Economic Warfare1
- United States. Congress. Senate1
- United States. Congress. Senate. Committee on Finance1
- United States. Department of State6
- United States. Department of State. Division of European Affairs1
- United States. Office of Petroleum Coordinator for War1
- United States. Office of War Information1
- United States. Patent Office2
- United States. War Department3
- Waste products as fuel5
- World War (1914-1918)1
- World War (1939-1945)3