{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Elements of Surveying and Levelling: With Descriptions of the Instruments and the Necessary Tables","author_name":"Charles Davies","thumbnail_url":"https://www.ebooknetworking.net/books/114/272/big1142729087.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1142729087.html\">Elements of Surveying and Levelling: With Descriptions of the Instruments and the Necessary Tables</a>","width":400,"height":300}