{"subject_places": ["Singen am Hohentwiel (Germany)", "Germany", "Singen am Hohentwiel"], "subjects": ["Railroads", "Economic conditions", "History", "Economic aspects"], "key": "/works/OL19199556W", "title": "Wegbereiter Eisenbahn", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL61804A"}}], "type": {"key": "/type/work"}, "latest_revision": 2, "revision": 2, "created": {"type": "/type/datetime", "value": "2019-03-11T13:59:36.231953"}, "last_modified": {"type": "/type/datetime", "value": "2025-01-19T05:23:37.908811"}}