{"title": "Economics of environmental conservation", "subjects": ["Environmental economics", "Economic aspects", "Environmental protection", "Sustainable development"], "key": "/works/OL16977373W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL231159A"}}], "type": {"key": "/type/work"}, "covers": [9589052], "latest_revision": 2, "revision": 2, "created": {"type": "/type/datetime", "value": "2014-07-29T20:46:48.917388"}, "last_modified": {"type": "/type/datetime", "value": "2021-09-16T03:58:28.382566"}}