{"type": {"key": "/type/edition"}, "publish_date": "1988", "publish_country": "pl", "languages": [{"key": "/languages/pol"}], "title": "Robotnicy, potrzeby, rzeczywisto\u015b\u0107", "by_statement": "L. Beskid ... et al", "authors": [{"key": "/authors/OL490385A"}], "series": ["Robotnicy Polscy : raporty z bada\u0144 -- z. 3"], "publishers": ["ANS"], "publish_places": ["Warszawa"], "pagination": "424 p.", "number_of_pages": 424, "source_records": ["marc:harvard_bibliographic_metadata/ab.bib.01.20150123.full.mrc:514295995:407"], "works": [{"key": "/works/OL42534248W"}], "key": "/books/OL57731963M", "latest_revision": 1, "revision": 1, "created": {"type": "/type/datetime", "value": "2025-02-16T15:05:19.706275"}, "last_modified": {"type": "/type/datetime", "value": "2025-02-16T15:05:19.706275"}}