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- High Energy Range Spectrometer
- Hyperion Energy Recovery System
- Home energy rating system
- Heart and Estrogen/Progestin Replacement Study
- Helicopter Expedient Refueling System
- HIV Epidemiology Research Study
- Human Ecology Research Service
- Heart Estrogen/Progestin Replacement Study
- Hertwig's Epithelial Root Sheath
- HQ Environmental Reporting System
tác giả
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