{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Leveling; Circular Curves Stadia and Plane-Table Surveying Topographic Surveying Hydrographic Surveying United States Land Surveys Mapping Practical a","author_name":"International Schools","thumbnail_url":"https://www.ebooknetworking.net/books/123/237/big1232371165.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1232371165.html\">Leveling; Circular Curves Stadia and Plane-Table Surveying Topographic Surveying Hydrographic Surveying United States Land Surveys Mapping Practical a</a>","width":400,"height":300}