{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"15 000 problems from Mathematical Olympiads: book 4","author_name":"R. Todev","thumbnail_url":"https://www.ebooknetworking.net/books/144/868/big144868708X.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-144868708X.html\">15 000 problems from Mathematical Olympiads: book 4</a>","width":400,"height":300}