{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Paul Ehrenfest: Collected scientific papers","author_name":"Paul Ehrenfest","thumbnail_url":"https://www.ebooknetworking.net/books/B00/07K/bigB0007K5KXK.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0007K5KXK.html\">Paul Ehrenfest: Collected scientific papers</a>","width":400,"height":300}