{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Mathematical investigations in the theory of value and price, 1892. Appreciation and interest, 1896.","author_name":"Irving Fisher, Irving, Fisher","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B007T4NP0W.html\">Mathematical investigations in the theory of value and price, 1892. Appreciation and interest, 1896.</a>","width":400,"height":300}