Group psychology and the analysis of the ego / Sigmund Freud ; authorized translation by James Strachey. Massenpsychologie und Ich-Analyse. English Freud, Sigmund, 1856-1939. Strachey, James, 1887-1967 Social psychology. Psychoanalysis. Ego (Psychology) 150.1952 20 301.15 22 FRG Includes index. Translation of: Massenpsychologie und Ich-Analyse. Leipzig : Internationaler Psychoanalystischer Verlag, 1921. Bibliographical footnotes. London : International Psycho-Analytical Press, 1922. 1922. 1922 Text 134 p. ; eng eng ger International psycho-analytical library ; no. 6 International psycho-analytical library ; no. 6.