{"created": {"type": "/type/datetime", "value": "2011-11-07T13:47:31.276957"}, "subjects": ["Alchemy", "Early works to 1800", "Medieval Medicine"], "latest_revision": 3, "key": "/works/OL16255665W", "title": "De secretis nature sive de quinta essentia libellus", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL148354A"}}], "type": {"key": "/type/work"}, "last_modified": {"type": "/type/datetime", "value": "2017-06-01T16:31:47.029796"}, "covers": [6967746], "revision": 3}