{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Aid to Survey-Practice: For Reference in Surveying, Levelling, and Setting-Out, and in Route-Surveys of Travellers by Land and Sea (Classic Reprint)","author_name":"Lawis Da; Jackson","thumbnail_url":"https://www.ebooknetworking.net/books/133/204/big1332047181.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1332047181.html\">Aid to Survey-Practice: For Reference in Surveying, Levelling, and Setting-Out, and in Route-Surveys of Travellers by Land and Sea (Classic Reprint)</a>","width":400,"height":300}