| Acronym | Meaning |
 | ADD | Administration On Developmental Disabilities |
| OPPTS | Office Of Prevention |
| NIST | National Institute Of Standards And Technology |
| OPIC | Overseas Private Investment Corporation |
| CETEC | Topographic Engineering Center |
| NCID | National Center For Infectious Diseases |
| GIPSA | Grain Inspection |
| NR | National Register Of Historic Places |
| TSA | Transportation Security Administration |
| BNA | Bureau Of National Affairs |
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