{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A treatise on railway surveying and levelling. In which the author has endeavoured to simplipy the most approved methods now adopted by surveyors","author_name":"John Quested","thumbnail_url":"https://www.ebooknetworking.net/books/B01/7H2/bigB017H25PLW.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B017H25PLW.html\">A treatise on railway surveying and levelling. In which the author has endeavoured to simplipy the most approved methods now adopted by surveyors</a>","width":400,"height":300}