{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A Text-Book of Field Astronomy for Engineers","author_name":"George Cary Comstock","thumbnail_url":"https://www.ebooknetworking.net/books/111/570/big1115700286.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1115700286.html\">A Text-Book of Field Astronomy for Engineers</a>","width":400,"height":300}