{"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 (Science Networks Historical Studies, 13)","author_name":"Vladimir Pavlovich Vizgin","thumbnail_url":"https://www.ebooknetworking.net/books/081/762/big0817626794.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0817626794.html\">Unified Field Theories in the First Third of the 20th Century (Science Networks Historical Studies, 13)</a>","width":400,"height":300}