| Abbreviation | Definition |
|---|---|
| PLOW | Public Library on Wheels |
| PLOW | Putting Libraries on the Web |
| PLPP | PHP Library Presenter for PLEX |
| PLPP | Public Libraries Partnerships Project |
| PLS | Peninsula Library System |
| PLS | Pioneer Library System |
| PLS | Public Libraries Section |
| PLS | Public Libraries Survey |
| PLS | Public Library Services |
| PLSN | Prison Library Support Network |
| PLSO | Parker Library Steward Obesrvatory |
| PLSO | Parker Library Steward Observatory |
| PLSSC | Public Library Support Services Center |
| plt. | plate |
| PLUS | Public Libraries Using Spanish |
| PLUS | Public Library User Survey |
| PLV | Public Libraries Victoria |
| PLWA | Public Libraries of Western Australia |
| PLWA | Public Libraries Western Australia |
| PMC | Paul Mellon Centre |