{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Double-Star Astronomy: Containing the History of Double-Star Work: Computation of Orbits and Position of Orbit-Planes; Formulae in Connection with Mass, Parallax, Magnitude, Etc","author_name":"Thomas Crompton Lewis","thumbnail_url":"https://www.ebooknetworking.net/books/114/628/big1146280262.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1146280262.html\">Double-Star Astronomy: Containing the History of Double-Star Work: Computation of Orbits and Position of Orbit-Planes; Formulae in Connection with Mass, Parallax, Magnitude, Etc</a>","width":400,"height":300}