{"covers": [1489389], "first_publish_date": "January 1, 1999", "latest_revision": 6, "key": "/works/OL2019937W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL243740A"}}], "subjects": ["Sound", "Equipment and supplies", "Design and construction", "Hearing", "Household electronics"], "created": {"type": "/type/datetime", "value": "2009-12-09T22:43:38.144206"}, "title": "Practical Acoustics", "last_modified": {"type": "/type/datetime", "value": "2020-02-28T08:40:37.971239"}, "type": {"key": "/type/work"}, "revision": 6}