{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Course of civil engineering; comprising plane trigonometry, surveying, and levelling. With their application to the construction of common roads, railways, canals","author_name":"John Gregory","thumbnail_url":"https://www.ebooknetworking.net/books/113/080/big1130808300.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1130808300.html\">Course of civil engineering; comprising plane trigonometry, surveying, and levelling. With their application to the construction of common roads, railways, canals</a>","width":400,"height":300}