{"type": {"key": "/type/edition"}, "publish_date": "1931", "publish_country": "gw", "languages": [{"key": "/languages/ger"}], "title": "Schluchtbeobachtungen und Ausschlachtungsversuche an Schweinen II", "subtitle": "Diss..Leipzig", "authors": [{"key": "/authors/OL5542306A"}], "oclc_numbers": ["32573703"], "subjects": ["Swine", "Feeds"], "publishers": ["J. Springer"], "publish_places": ["Berlin"], "pagination": "66 pages", "number_of_pages": 66, "source_records": ["marc:marc_columbia/Columbia-extract-20221130-007.mrc:115765168:747", "marc:harvard_bibliographic_metadata/ab.bib.10.20150123.full.mrc:547206369:742"], "works": [{"key": "/works/OL36924610W"}], "key": "/books/OL49865271M", "latest_revision": 2, "revision": 2, "created": {"type": "/type/datetime", "value": "2023-11-14T08:07:18.236169"}, "last_modified": {"type": "/type/datetime", "value": "2024-12-09T10:21:26.755166"}}