title: The PSI factor. An examination of the medical and psychological aspects of intelligence work.
mesh_terms: D003415:Crime; D006076:Government; D049673:History, 20th Century; D049690:History, Ancient; D006801:Humans; D006990:Hypnosis; D010268:Parapsychology; D011583:Psychological Warfare; D006113:United Kingdom; D014857:Warfare