| Acronym | Meaning |
 | SERC | Smithsonian Environmental Research Center |
| NTP | National Toxicology Program |
| HAB | HIV/AIDS Bureau |
| MAC | Market Access And Compliance |
| FIPS | Federal Information Processing Standard |
| CONSER | Cooperative Online Serials |
| EREN | Energy Efficiency And Renewable Energy Network |
| NBL | New Brunswick Laboratory |
| NEIC | National Earthquake Information Center |
| IO | Bureau Of International Organization Affairs |
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