{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Gravitation: An Elementary Explanation Of The Principal Perturbations In The Solar System (1884)","author_name":"George Biddell Airy","thumbnail_url":"https://www.ebooknetworking.net/books/054/889/big0548899924.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0548899924.html\">Gravitation: An Elementary Explanation Of The Principal Perturbations In The Solar System (1884)</a>","width":400,"height":300}