title: Seven propositions.1909.
authors.forename: B
authors.initials: B
authors.lastname: Friedländer
mesh_terms: D000293:Adolescent; D000328:Adult; D005783:Gender Identity; D049672:History, 19th Century; D049673:History, 20th Century; D006716:Homosexuality / Q000266:history*; D006801:Humans; D008297:Male