{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"High School Mathematics Contests: part 4","author_name":"R. Todev","thumbnail_url":"https://www.ebooknetworking.net/books/145/056/big1450566855.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1450566855.html\">High School Mathematics Contests: part 4</a>","width":400,"height":300}