{"subjects": ["Power (Mechanics)", "Power-plants", "Direct energy conversion"], "key": "/works/OL5910557W", "title": "Energy conversion systems", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL1459078A"}}], "type": {"key": "/type/work"}, "covers": [1241711], "latest_revision": 4, "revision": 4, "created": {"type": "/type/datetime", "value": "2009-12-10T18:10:29.496389"}, "last_modified": {"type": "/type/datetime", "value": "2022-10-17T01:47:15.631824"}}