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P
* indicates a non-preferred term, which includes a link to the preferred term.
- Pan American Health Organization
- PASSHE*
- Penn State*
- Pennsylvania Commission on Crime and Delinquency
- Pennsylvania State System of Higher Education
- Pennsylvania State University
- Pennsylvania State University-Harrisburg
- Pennsylvania State University. Population Research Institute
- Pennsylvania State University. Sociology Department
- Pergamon Press
- Pew Charitable Trusts
- Pfizer, Inc
- PFund*
- Philanthrofund Foundation
- Population Education, Inc
- Practical Sampling International (Nigeria)
- President's Commission on Law Enforcement and the Administration of Justice
- Princeton University. Office of Population Research
- Progressive Conservative Party of Canada
- PSI*