{"type": {"key": "/type/work"}, "title": "An oration on the causes of the difference, in point of frequency and force, between the endemic diseases of the United States of America, and those of the countries of Europe", "subjects": ["Diseases", "Causes and theories of causation", "Medical geography", "Climate", "Disease Outbreaks", "Addresses", "Disease", "Etiology"], "subject_places": ["United States", "Europe"], "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL1710003A"}}, {"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL5225469A"}}], "key": "/works/OL45326528W", "latest_revision": 2, "revision": 2, "created": {"type": "/type/datetime", "value": "2026-05-04T10:14:30.550982"}, "last_modified": {"type": "/type/datetime", "value": "2026-09-19T12:43:52.900869"}}