{"created": {"type": "/type/datetime", "value": "2009-12-10T10:43:14.498392"}, "subjects": ["Calculus"], "latest_revision": 8, "key": "/works/OL5597249W", "title": "Elements of calculus", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL1347428A"}}], "type": {"key": "/type/work"}, "last_modified": {"type": "/type/datetime", "value": "2020-09-18T09:24:27.589858"}, "covers": [7061727], "revision": 8}