"Aion: Researches into the Phenomenology of the Self" by C.G. Jung is a psychological exploration delving into the depths of the unconscious mind. Published by Routledge in 1991, this 2nd edition features insightful analyses and reflections on the nature of the self, making it a valuable resource for those interested in Jungian psychology and psychoanalysis. The book, with a total of 362 pages, is illustrated and written in English, providing a comprehensive and scholarly examination of the complexities of the human psyche.