{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Geometrical and graphical essays: Containing a general description of the mathematical instruments used in geometry, civil and military surveying, levelling, ... illustrated by thirty-four copper plates","author_name":"George Adams","thumbnail_url":"https://www.ebooknetworking.net/books/B00/3YL/bigB003YL3L6W.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B003YL3L6W.html\">Geometrical and graphical essays: Containing a general description of the mathematical instruments used in geometry, civil and military surveying, levelling, ... illustrated by thirty-four copper plates</a>","width":400,"height":300}