{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Choice and chance; an elementary treatise on permutations, combinations, and probability, with 640 exercises","author_name":"William Allen Whitworth","thumbnail_url":"https://www.ebooknetworking.net/books/117/833/big1178336956.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1178336956.html\">Choice and chance; an elementary treatise on permutations, combinations, and probability, with 640 exercises</a>","width":400,"height":300}