{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A Manual of Spherical and Practical Astronomy: Volume 2. Theory and Use of Astronomical Instruments","author_name":"William Chauvenet","thumbnail_url":"https://www.ebooknetworking.net/books/142/127/big1421272598.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1421272598.html\">A Manual of Spherical and Practical Astronomy: Volume 2. Theory and Use of Astronomical Instruments</a>","width":400,"height":300}