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Subclass BF
| BF1-990 | Psychology | |
| BF38-64 | Philosophy. Relation to other topics | |
| BF173-175.5 | Psychoanalysis | |
| BF176-176.5 | Psychological tests and testing | |
| BF180-198.7 | Experimental psychology | |
| BF203 | Gestalt psychology | |
| BF207-209 | Psychotropic drugs and other substances | |
| BF231-299 | Sensation. Aesthesiology | |
| BF309-499 | Consciousness. Cognition Including learning, attention, comprehension, memory, imagination, genius, intelligence, thought and thinking, psycholinguistics, mental fatigue | |
| BF501-505 | Motivation | |
| BF511-593 | Affection. Feeling. Emotion | |
| BF608-635 | Will. Volition. Choice. Control | |
| BF636-637 | Applied psychology | |
| BF638-648 | New Thought. Menticulture, etc. | |
| BF660-685 | Comparative psychology. Animal and human psychology | |
| BF692-692.5 | Psychology of sex. Sexual behavior | |
| BF697-697.5 | Differential psychology. Individuality. Self | |
| BF698-698.9 | Personality | |
| BF699-711 | Genetic psychology | |
| BF712-724.85 | Developmental psychology Including infant psychology, child psychology, adolescence, adulthood | |
| BF725-727 | Class psychology | |
| BF795-839 | Temperament. Character | |
| BF839.8-885 | Physiognomy. Phrenology | |
| BF889-905 | Graphology. Study of handwriting | |
| BF908-940 | The hand. Palmistry | |
| BF1001-1389 | Parapsychology | |
| BF1001-1045 | Psychic research. Psychology of the conscious | |
| BF1048-1108 | Hallucinations. Sleep. Dreaming. Visions | |
| BF1111-1156 | Hypnotism. Suggestion. Mesmerism. Subliminal projection | |
| BF1161-1171 | Telepathy. Mind reading. Thought transference | |
| BF1228-1389 | Spiritualism Including mediumship, spirit messages, clairvoyance | |
| BF1404-2055 | Occult sciences | |
| BF1444-1486 | Ghosts. Apparitions. Hauntings | |
| BF1501-1562 | Demonology. Satanism. Possession | |
| BF1562.5-1584 | Witchcraft | |
| BF1585-1623 | Magic. Hermetics. Necromancy | |
| BF1651-1729 | Astrology | |
| BF1745-1779 | Oracles. Sibyls. Divinations | |
| BF1783-1815 | Seers. Prophets. Prophecies | |
| BF1845-1891 | Fortune telling | |
| BF2050-2055 | Human alien encounters. Contact between humans and extraterrestrials | |
