{"title": "Principles of marketing", "covers": [3874049], "first_publish_date": "1988", "key": "/works/OL2443346W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL338289A"}}], "dewey_number": ["658.8"], "subjects": ["Marketing", "Einf\u00fchrung", "Mercadotecnia"], "type": {"key": "/type/work"}, "latest_revision": 4, "revision": 4, "created": {"type": "/type/datetime", "value": "2009-12-09T23:41:28.129900"}, "last_modified": {"type": "/type/datetime", "value": "2021-08-19T00:29:33.806404"}}