{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Lectures on special topics in field theory: By G. Wentzel ; notes by K.K. Gupta (Lectures on mathematics and physics : Physics)","author_name":"Gregor Wentzel","thumbnail_url":"https://www.ebooknetworking.net/books/B00/07J/bigB0007J4PFA.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0007J4PFA.html\">Lectures on special topics in field theory: By G. Wentzel ; notes by K.K. Gupta (Lectures on mathematics and physics : Physics)</a>","width":400,"height":300}