Encyclopedias, Almanacs, Transcripts, and Maps
- Parapsychology: The Indian Journal of Parapsychological Research
- Parascience Proceedings
- Parascience Research Journal
- Paraskeva, Saint
- Pardalotes: Pardalotidae
- PARINFO
- Parish, W. T. (1873-1946)
- Parity, Nonconservation of
- Parkes, F. M. (ca. 1872)
- Parkinson Disease
- Parkinson Disease
- Parkinson Disease
- Parkman, Paul Douglas (1932- )
- Paroptic Vision
- Paroxysmal Hemicrania
- Paroxysmal nocturnal hemoglobinuria
- Paroxysmal Nocturnal Hemoglobinuria
- Parrish-Harra, Carol W. (1935-)
- Parrots: Psittaciformes
- Parsley Frogs: Pelodytidae