Encyclopedias, Almanacs, Transcripts, and Maps
- President's Council on Sustainable Development
- Presley, Elvis Aaron
- Preuss, Konrad T.
- Priapulida (Priapulans)
- Price-Anderson Act (1957)
- prickly pear
- Priesthood
- Priesthood: An Overview
- Priesthood: Buddhist Priesthood
- Priesthood: Christian Priesthood
- Priesthood: Daoist Priesthood
- Priesthood: Hindu Priesthood
- Priesthood: Jewish Priesthood
- Priesthood: Shint? Priesthood
- Primary Pollutant
- Primary Productivity (Gross and Net)
- Primary Standards
- Primates (Primates)
- Priority Pollutant
- Pristiophoriformes (Sawsharks)