| item | description | category | filter | more on... |
| USEC | Microsecond | Governmental/NASA |
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| USEC | Unit Sustainability Education Coordinator | Governmental/Military |
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| USEC | United States Enrichment Corporation | Business/Firms |
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| USEC | United States Mission to the European Communities | Business/General |
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| USEC | Universal Security Instruments, Inc. | Business/General |
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