{"covers": [8145559], "last_modified": {"type": "/type/datetime", "value": "2018-03-10T04:55:34.019214"}, "latest_revision": 1, "key": "/works/OL17847769W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL7218857A"}}], "created": {"type": "/type/datetime", "value": "2018-03-10T04:55:34.019214"}, "title": "Supplement to hatcheries and dealers participating in the National Poultry Improvement Plan", "subject_places": ["United States"], "subjects": ["Poultry", "Directories", "National Poultry Improvement Plan (U.S.)", "Hatcheries"], "type": {"key": "/type/work"}, "revision": 1}