{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Combinatorial Extremization: In Mathematical Olympiad and Competitions (Mathematical Olympiad Series)","author_name":"Yuefeng Feng","thumbnail_url":"https://www.ebooknetworking.net/books/981/472/big9814723169.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-9814723169.html\">Combinatorial Extremization: In Mathematical Olympiad and Competitions (Mathematical Olympiad Series)</a>","width":400,"height":300}