{"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, Astronomy","author_name":"I. C. S. Staff","thumbnail_url":"https://www.ebooknetworking.net/books/B00/1EM/bigB001EMANIW.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B001EMANIW.html\">Leveling, Circular Curves, Stadia and Plane-Table Surveying, Topographic Surveying, Hydrographic Surveying, United States Land Surveys, Mapping, Astronomy</a>","width":400,"height":300}