Sigmund Freud By adrianglz Period: May 6, 1856 to Sep 23, 1939 His life https://es.wikipedia.org/wiki/Sigmund_Freud 1881 His graduation as a doctor https://es.wikipedia.org/wiki/Sigmund_Freud 1884 He published his work Über Coca https://es.wikipedia.org/wiki/Sigmund_Freud
