| Abbreviation | Definition |
|---|---|
| PPG | Pages; reference on more than one page |
| PPL | Parallel Patterns Library |
| PPL | Policy and Procedures Library |
| PPL | Portland Public Library |
| PPL | Providence Public Library |
| PPL | Punjab Public Library |
| PPLC | Pinellas Public Library Cooperative |
| PPLD | Pikes Peak Library District |
| PPLD | Poughkeepsie Public Library District |
| PPML | Procurement Process Model Library |
| PPTL | Pied Piper Toy Library |
| PRDA | Primary Resource Development Assistance |
| PRDL | Post Reformation Digital Library |
| PRDL | Post-Reformation Digital Library |
| PRL | Parkland Regional Library |
| PRL | Prometheus Research Library |
| PRLC | Pittsburgh Regional Library Center |
| PRLS | Piedmont Regional Library System |
| PROCAM | Prospective Cardiovascular Münster cohort Pub. Publication |
| ProcEurSocStDrugTox | Proceedings of the European Society for the Study of Drug Toxicity |