{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The method of finding the longitude at sea, by time-keepers: to which are added, tables of equations to equal altitudes. ... By William Wales, ... A ... printed from a copy corrected by the author.","author_name":"William$c1734?-1796 Wales","thumbnail_url":"https://www.ebooknetworking.net/books/B00/9GD/bigB009GDPQ5Q.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B009GDPQ5Q.html\">The method of finding the longitude at sea, by time-keepers: to which are added, tables of equations to equal altitudes. ... By William Wales, ... A ... printed from a copy corrected by the author.</a>","width":400,"height":300}