{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Marine Navigation Workbook, Fourth Edition: Piloting and Celestial and Electronic Navigation","author_name":"Richard R. Hobbs","thumbnail_url":"https://www.ebooknetworking.net/books/155/750/big1557503850.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1557503850.html\">Marine Navigation Workbook, Fourth Edition: Piloting and Celestial and Electronic Navigation</a>","width":400,"height":300}