| item | description | category | filter | more on... |
| PGR | Planning, Grants, and Research Office | Edu./Universities |
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| PGR | Plant Gene Register | Edu./Botany |
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| PGR | Plant Genome Research | Governmental/US Gov. |
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| PGR | Plant Growth Regulator | Misc/Farming |
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| PGR | Population Growth Rate | Governmental/US Gov. |
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| PGR | Progressive Corporation of Ohio | Business/General |
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| PGR | Spacelab Planning and Ground Rule | Governmental/NASA |
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