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- U.S. Office of Personnel Management (1)
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- U.S. Senate (80)
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- U.S. Testing Company, Inc. (2)
- U.S./Japan Government Cooperative Program on Natural Resources (7)
- U.S./Japan Government Cooperative Program on Natural Resources (UJNR) (8)
- U.S./Japan Natural Resources Development Program (UJNR) (2)