{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The USSR Olympiad Problem Book: Selected Problems and Theorems of Elementary Mathematics (Dover Books on Mathematics)","author_name":"D. O. Shklarsky, N. N. Chentzov, I. M. Yaglom, Mathematics","thumbnail_url":"https://www.ebooknetworking.net/books/048/627/big0486277097.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0486277097.html\">The USSR Olympiad Problem Book: Selected Problems and Theorems of Elementary Mathematics (Dover Books on Mathematics)</a>","width":400,"height":300}