Encyclopedias, Almanacs, Transcripts, and Maps
- Price, Harry (1881-1948)
- Price, Henry Habberley (1899-1984)
- Price-Mars, Jean (1875-1969)
- Primary Lateral Sclerosis
- Primates
- Primates
- Primroses
- Primroses
- Prince Henry The Navigator
- Prince Louis-Victor-Pierre-Raymond, 7th Duc de Broglie
- Prince, Walter Franklin (1863-1934)
- Princeton Engineering Anomalies Research (PEAR)
- Principles and Guidelines for the Use of Animals in Precollege Education
- Principles for the Utilization and Care of Vertebrate Animals Used in Testing, Research, and Education
- Principles for Those in Research and Experimentation
- Principles of Ethics and Code of Professional Conduct with Advisory Opinions
- Principles of Medical Ethics (1957)
- Principles of Medical Ethics (2001)
- Principles of Veterinary Medical Ethics
- Principlism