{"type": {"key": "/type/work"}, "title": "Praktische Methoden der Geburtenregelung. Einf\u00fchrung von Robert L. Dickinson. Vorwort von Havelock Ellis. Unter medizinischer Mitwirkung von Abraham Stone. [Ins Deutsche \u00fcbertragen von Werner von Gr\u00fcnau]", "subjects": ["Birth control", "Contraception"], "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL15124153A"}}], "key": "/works/OL44224231W", "latest_revision": 1, "revision": 1, "created": {"type": "/type/datetime", "value": "2025-10-10T17:22:20.524578"}, "last_modified": {"type": "/type/datetime", "value": "2025-10-10T17:22:20.524578"}}