{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Unified Field Theories: in the first third of the 20th century (Modern Birkhäuser Classics)","author_name":"Vladimir P. Vizgin","thumbnail_url":"https://www.ebooknetworking.net/books/303/480/big3034801734.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-3034801734.html\">Unified Field Theories: in the first third of the 20th century (Modern Birkhäuser Classics)</a>","width":400,"height":300}