{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Fifty Lectures for American Mathematics Competitions  Problems Book 1","author_name":"Guiling Chen, Yongcheng Chen","thumbnail_url":"https://www.ebooknetworking.net/books/147/760/big1477600167.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1477600167.html\">Fifty Lectures for American Mathematics Competitions  Problems Book 1</a>","width":400,"height":300}