| item | description | category | filter | more on... |
| PTPR | Papillary Tumor of the Pineal Region | Medical/Oncology |
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| PTPR | Pity The Poor Reader | Edu./Libraries |
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| PTPR | Post-Traumatic Psychological Re-integration | Edu./Psychology |
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| PTPR | Power Technologies PRoducts | Business/Firms |
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| PTPR | PrimeTime Public Relations and Consulting | Business/Firms |
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| PTPR | Production and Type Performance Registry | Business/General |
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