{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Time and Space Weight and Inertia A Chronogeometrical Introduction to Einstein's Theory","author_name":"Fokker A.D","thumbnail_url":"https://www.ebooknetworking.net/books/B00/00C/bigB0000CMNIT.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0000CMNIT.html\">Time and Space Weight and Inertia A Chronogeometrical Introduction to Einstein&#039;s Theory</a>","width":400,"height":300}