| Acronym | Meaning |
 | BPWTT | Best Practical Wastewater Treatment Technology |
| ESSP | Earth Systems Science Pathfinder |
| APHIS | Animal And Plant Health Inspection Service |
| REM | Reflection Electron Microscopy |
| MTX(ALPHA) | Muffin-tin X(alpha) Statistical Exchange |
| AAPS | American Association Of Pharmaceutical Scientists |
| IAGA | International Association Of Geomagnetism And Aeronomy |
| BFBR | Biological Fluidized Bed Reactor |
| CIS | Commonwealth Of Independent States |
| ANA | Adiabatic Nuclei Approximation (in Electron-mol. Scattering) |
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