{"identifiers": {"goodreads": ["414855"], "librarything": ["3396"]}, "title": "Second Foundation", "authors": [{"key": "/authors/OL34221A"}], "publish_date": "1989-03", "publishers": ["Ballentine Books"], "weight": "5.6 ounces", "series": ["Foundation (5); Foundation Series Bk 5"], "physical_format": "Mass Market Paperback", "subjects": ["Science Fiction - General", "Fiction / Science Fiction / General", "Fiction - Science Fiction", "Fiction", "Life on other planets", "Psychohistory", "Psychological fiction", "Seldon, Hari (Fictitious chara", "Seldon, Hari (Fictitious character)"], "edition_name": "1st Ballantine Books edition", "languages": [{"key": "/languages/eng"}], "type": {"key": "/type/edition"}, "physical_dimensions": "6.8 x 4.2 x 0.9 inches", "isbn_10": ["0345336291"], "isbn_13": ["9780345336293"], "ocaid": "secondfoundation0000asim_m5l6", "covers": [14322953], "source_records": ["amazon:0345336291"], "key": "/books/OL9700822M", "number_of_pages": 282, "works": [{"key": "/works/OL46309W"}], "latest_revision": 10, "revision": 10, "created": {"type": "/type/datetime", "value": "2008-04-30T09:38:13.731961"}, "last_modified": {"type": "/type/datetime", "value": "2026-03-30T06:35:41.263055"}}