{"isbn_13": ["9780121988203"], "physical_format": "Hardcover", "subtitle": "Progress and Perspectives", "last_modified": {"type": "/type/datetime", "value": "2008-04-30 09:38:13.731961"}, "languages": [{"key": "/l/eng"}], "publishers": ["Academic Pr"], "number_of_pages": 405, "id": 12532183, "edition_name": "U.S. ed edition", "isbn_10": ["0121988201"], "publish_date": "December 1983", "key": "/b/OL9281078M", "authors": [{"key": "/a/OL2646996A"}], "title": "Combinatorics on Words", "type": {"key": "/type/edition"}, "subjects": ["Combinatorics & graph theory", "Mathematical theory of computation", "Combinatorics", "Computer Mathematics", "Combinatorial analysis", "Congresses", "Word problems (Mathematics)"], "revision": 1}