{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Descriptions of bench marks in the United States: With a readjustment of the level net and resulting elevations (Serial / U.S. Dept. of commerce, Coast and Geodetic Survey)","author_name":"John Fillmore Hayford","thumbnail_url":"https://www.ebooknetworking.net/books/B00/08B/bigB0008B3E8Q.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0008B3E8Q.html\">Descriptions of bench marks in the United States: With a readjustment of the level net and resulting elevations (Serial / U.S. Dept. of commerce, Coast and Geodetic Survey)</a>","width":400,"height":300}