{"last_modified": {"type": "/type/datetime", "value": "2010-12-05T05:10:36.710485"}, "title": "Inorganic cement for mine roof-bolt grouting", "created": {"type": "/type/datetime", "value": "2009-12-10T19:08:59.629610"}, "subjects": ["Grouting", "Gypsum", "Mine roof bolting", "Portland cement", "Testing"], "latest_revision": 2, "key": "/works/OL6429481W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL1701214A"}}], "type": {"key": "/type/work"}, "revision": 2}