New York: Harcourt, Brace & Company, 1932. First English language edition. Hardcover. 8vo. [4], v-xxiv, 338, [2] pp. Green cloth with gold lettering on the spine. Illustrated with a few in-text diagrams. Translated with a preface by H. Stafford Hatfield. A treatise on psychology and the role the subconscious plays..... More