{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The Topology of the Calculas of Variations in the Large.","author_name":"L.A. LJUSTERNIK","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B000JLNLRE.html\">The Topology of the Calculas of Variations in the Large.</a>","width":400,"height":300}