{"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 Based Systems, Rostock, Germany, May 6-9, 1991 : Proceedings (Lecture Notes in Computer Science)","author_name":"Demetrovics, J.; Thalheim, B. & Gerhardt, H. -D. (eds.)","thumbnail_url":"https://www.ebooknetworking.net/books/038/754/big0387540091.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0387540091.html\">Mfdbs 91: 3rd Symposium on Mathematical Fundamentals of Database and Knowledge Based Systems, Rostock, Germany, May 6-9, 1991 : Proceedings (Lecture Notes in Computer Science)</a>","width":400,"height":300}