| item | description | category | filter | more on... |
| HRF | Bitmap graphics (Hitachi Raster Format) (CADCore) | IT/File Extensions |
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| HRF | Bitmap graphics (Hitachi Raster Format) (CADCore) | IT/File Extensions |
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| HRF | Height-Range Finder | Governmental/Military |
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| HRF | Historic Race Finland | Radio Stations |
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| HRF | Human Research Facility | Governmental/NASA |
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