Encyclopedias, Almanacs, Transcripts, and Maps
- Prion Diseases
- Prion diseases
- Prion Diseases
- Prisoner's Dilemma
- Prisoners as Research Subjects
- Prisoners, Healthcare Issues of
- Pritikin Diet
- Privacy and Confidentiality in Research
- Privacy in Healthcare
- Privacy, Legal and Ethical Issues
- Private Ownership of Inventions
- Private UFO Investigations (Group)
- Probability Theory
- Probability Theory
- Probability: Basic Concepts of Mathematical Probability
- Probability: History, Interpretation, and Application
- Probe—The Unknown (Magazine)
- Probing the Unexplained (Newsletter)
- Proceedings of the College of Universal Wisdom
- Proceedings of the Institute of Psychophysical Research