{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Standard field tables and trigonometric formulas (1913)","author_name":"United States. Bureau of Land Management.","thumbnail_url":"https://www.ebooknetworking.net/books/B00/30X/bigB0030XMZHU.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0030XMZHU.html\">Standard field tables and trigonometric formulas (1913)</a>","width":400,"height":300}