| Acronym | Meaning |
 | NPS | National Park Service |
| NDU | National Defense University |
| MSEL | Materials Science And Engineering Library |
| NEH | National Endowment For The Humanities |
| OSC | Office Of Special Counsel |
| DOI | Department Of The Interior |
| UNICOR | Federal Prison Industries |
| NSTL | National Space Technology Laboratories |
| CFR | Code Of Federal Regulations |
| ORR | Office Of Refugee Resettlement |
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