{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Introduction to Combinatorial Mathematics.","author_name":"C. L. Liu","thumbnail_url":"https://www.ebooknetworking.net/books/B00/7BP/bigB007BPT954.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B007BPT954.html\">Introduction to Combinatorial Mathematics.</a>","width":400,"height":300}