{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Calculus (fourth edition of Economics and Management Concise Edition) (University of mathematical three-dimensional materials; 21st century math education information quality materials)","author_name":"WU GAN CHANG","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-7300139639.html\">Calculus (fourth edition of Economics and Management Concise Edition) (University of mathematical three-dimensional materials; 21st century math education information quality materials)</a>","width":400,"height":300}