{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Proceedings of the 1989 Acm Sigmod International Conference on the Management of Data Portland Oregon (Sigmod Record Vol 18, No 2 June 1989)","author_name":"James Clifford, Bruce Lindsay","thumbnail_url":"https://www.ebooknetworking.net/books/089/791/big0897913175.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0897913175.html\">Proceedings of the 1989 Acm Sigmod International Conference on the Management of Data Portland Oregon (Sigmod Record Vol 18, No 2 June 1989)</a>","width":400,"height":300}