{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Mathematical Formulas for Economists","author_name":"Bernd Luderer, Volker Nollau, Klaus Vetters","thumbnail_url":"https://www.ebooknetworking.net/books/354/046/big354046901X.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-354046901X.html\">Mathematical Formulas for Economists</a>","width":400,"height":300}