{"subjects": ["Physiological effect", "Age factors", "Tobacco", "Bronchitis", "Etiology", "Complications", "Pulmonary Emphysema", "Dust", "Smoking", "Industrial hygiene", "Pulmonary emphysema", "Age Factors"], "key": "/works/OL18945352W", "title": "Forschungsbericht, chronische Bronchitis und Staubbelastung am Arbeitsplatz", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL1830411A"}}], "type": {"key": "/type/work"}, "covers": [4447605], "latest_revision": 2, "revision": 2, "created": {"type": "/type/datetime", "value": "2019-02-18T08:03:54.127610"}, "last_modified": {"type": "/type/datetime", "value": "2023-01-10T16:11:02.495317"}}