| Acronym | Meaning |
 | NPS | National Park Service |
| USES | United States Employment Service |
| RD | Rural Development |
| DODSSP | Single Stock Point For Specifications And Standards |
| NIPA | National Income And Product Accounts |
| U.N. | United Nations |
| IBB | International Broadcasting Bureau |
| OFM | Office Of Financial Management |
| PAHO | Pan American Health Organization |
| NTP | National Toxicology Program |
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