| item | description | category | filter | more on... |
| PPAP | Particle Physics Advisory Panel | Edu./Physics |
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| PPAP | Planning For Pa Association Progress | Business/Prof. Org. |
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| PPAP | Production Part Approval Process | Governmental/Military |
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| PPAP | Production Part Approval Process | Governmental/NASA |
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| PPAP | Production Part Approval Process | Business/General |
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