{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"MFDBS 91: 3rd Symposium on Mathematical Fundamentals of Database and Knowledge Base Systems, Rostock, Germany, May 6-9, 1991 (Lecture Notes in Computer Science)","author_name":"","thumbnail_url":"https://www.ebooknetworking.net/books/354/054/big3540540091.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-3540540091.html\">MFDBS 91: 3rd Symposium on Mathematical Fundamentals of Database and Knowledge Base Systems, Rostock, Germany, May 6-9, 1991 (Lecture Notes in Computer Science)</a>","width":400,"height":300}