1. The study of sexual inversion Author(s): Ellis, Havelock, 1859-1939, author Publication: [United States?] : [publisher not identified], [between 1893 and 1899?] Subject(s): Homosexuality -- psychology
2. The philosophy of conflict and other essays in wartime. Second series Author(s): Ellis, Havelock, 1859-1939, author Publication: Boston ; New York : Houghton Mifflin Company, 1919 Subject(s): SexualityWarfare -- psychologySexual Behavior
