{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The Classification of Quadrilaterals: A Study in Definition (Research in Mathematics Education)","author_name":"Zalman Usiskin","thumbnail_url":"https://www.ebooknetworking.net/books/159/311/big1593116942.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1593116942.html\">The Classification of Quadrilaterals: A Study in Definition (Research in Mathematics Education)</a>","width":400,"height":300}