1). Penologist 2). Pedologist 3). Pomologist
1). Phonologist 2). Petrologist 3). Pathologist 4). Phycologist 5). Philologist
1). Papyrologist 2). Phrenologist 3). Psychologist 4). Psephologist 5). Proctologist 6). Palynologist 7). Physiologist
1). Primatologist 2). Planetologist 3). Phraseologist 4). Pteridologist
1). Photobiologist 2). Paleobiologist 3). Protozoologist 4). Paleoecologist 5). Paleontologist 6). Paleozoologist 7). Photogeologist 8). Parasitologist 9). Pharmacologist
1). Psychobiologist 2). Phenomenologist
1). Parapsychologist 2). Paleopathologist
1). Psychopathologist
1). Paleoclimatologist 2). Psychophysiologist
1). Paleoanthropologist
1). Psychopharmacologist