{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Professor Hoffmann's Best Math and Logic Puzzles (Dover Recreational Math)","author_name":"Louis Hoffmann","thumbnail_url":"https://www.ebooknetworking.net/books/048/645/big0486454746.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0486454746.html\">Professor Hoffmann&#039;s Best Math and Logic Puzzles (Dover Recreational Math)</a>","width":400,"height":300}