Routledge is now re-issuing this prestigious series of 204 volumes originally published between 1910 and 1965. The titles include works by key figures such asC.G. Jung, Sigmund Freud, Jean Piaget, Otto Rank, James Hillman, Erich Fromm, Karen Horney and Susan Isaacs. Each volume is available on its own, as part of a themed mini-set, or as part of a specially-priced 204-volume set. A brochure listing each title in the "International Library of Psychology" series is available upon request.

First published in 1999. This is Volume III of twenty-one of the Individual Differences Psychology series. Written in 1923, this is a study in the psycho-analysis of race and the purpose of this volume is to show that beyond the duality of race there existed a psychological duality; and, more important, that they were the same duality.