{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Magnetic declination in North Carolina in 1930","author_name":"U.S. Coast and Geodetic Survey","thumbnail_url":"https://www.ebooknetworking.net/books/B00/37C/bigB0037CEVL2.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0037CEVL2.html\">Magnetic declination in North Carolina in 1930</a>","width":400,"height":300}