{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The Calculus Of Variations In The Large","author_name":"Marston Morse","thumbnail_url":"https://www.ebooknetworking.net/books/125/827/big1258278847.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1258278847.html\">The Calculus Of Variations In The Large</a>","width":400,"height":300}