{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"PUB 229 Sight Reduction Tables for Marine Navigation, Volume 4: Latitudes 45° - 60°, Inclusive","author_name":"N.I.M.A.","thumbnail_url":"https://www.ebooknetworking.net/books/157/785/big1577852346.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1577852346.html\">PUB 229 Sight Reduction Tables for Marine Navigation, Volume 4: Latitudes 45° - 60°, Inclusive</a>","width":400,"height":300}