{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Particles, Sources, and Fields: Vol. 2","author_name":"Julian Schwinger","thumbnail_url":"https://www.ebooknetworking.net/books/073/820/big0738200549.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0738200549.html\">Particles, Sources, and Fields: Vol. 2</a>","width":400,"height":300}