{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Evolution of Mathematical Concepts: An Elementary Study (Dover Books on Mathematics)","author_name":"Raymond L. Wilder","thumbnail_url":"https://www.ebooknetworking.net/books/048/649/big0486490610.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0486490610.html\">Evolution of Mathematical Concepts: An Elementary Study (Dover Books on Mathematics)</a>","width":400,"height":300}