{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Curves in non-metrical analysis situs with an application in the calculus of variations","author_name":"Nels Johann Lennes","thumbnail_url":"https://www.ebooknetworking.net/books/B00/3QC/bigB003QCK6EY.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B003QCK6EY.html\">Curves in non-metrical analysis situs with an application in the calculus of variations</a>","width":400,"height":300}