Family Abbreviations and Acronyms
- PFWSPolice Families Welfare Society
- PGDDPlant Genome Duplication Database
- PGLPolyyalaceae
- PGPPlagiopteraceae
- PGYPlagiogyriaceae
- PHDProfessor of Human Development
- PHCPentaphylacapeae
- PHDPhiladelphaceae
- PHLPhilydraceae
- PHNPhyllonomaceae
- PHOPhormipceae
- PHRPhrymaceae
- PHTPhytolaccaceae
- PICPicramniaceae
- PICKPremarital Interpersonal Choices and Knowledge
- PIDFPartners In Development Foundation
- PIHPartners In Hope
- PILIPassenger and Immigration Lists Index
- PINParents In Need
- PINPinaceaf
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