{"subtitle": "10-year results", "key": "/works/OL6779649W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL1849370A"}}], "title": "Hybrid poplar on two anthracite coal-mine spoils", "subject_places": ["Pennsylvania"], "subjects": ["Poplar"], "type": {"key": "/type/work"}, "covers": [11882000], "latest_revision": 4, "revision": 4, "created": {"type": "/type/datetime", "value": "2009-12-10T19:44:31.522170"}, "last_modified": {"type": "/type/datetime", "value": "2021-09-02T03:47:25.020373"}}