| Psychology: an elementary text-book
Hermann Ebbinghaus | |
| Psychology: Briefer Course
William James | |
| Psychomancy: Spirit-Rappings and Table-Tippings Exposed
Charles Grafton Page | |
| Psychopathia sexualis: With especial reference to contrary sexual instinct / A medico-legal study
R. von Krafft-Ebing | |
| Psychopathology of Everyday Life
Sigmund Freud | |
| Psycho-Phone Messages
Francis Grierson | |
| Psychotennis, Anyone?
Lloyd Williams | |
| Psychotherapy
Hugo Münsterberg | |
| Psychotherapy / Including the History of the Use of Mental Influence, Directly and Indirectly, in Healing and the Principles for the Application of Energies Derived from the Mind to the Treatment of Disease
James J. Walsh | |
| Ptolemy's Tetrabiblos
Ptolemy |
