{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A Treatise on Gunter's Scale and the Sliding Rule: Together With a Description and Use, of the Sector, Protractor, Plain Scale, and Line of Chords Or, ... Bodies, Especially That of Timber, by the Sli","author_name":"George Curtis","thumbnail_url":"https://www.ebooknetworking.net/books/B00/2IY/bigB002IYE0DO.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B002IYE0DO.html\">A Treatise on Gunter&#039;s Scale and the Sliding Rule: Together With a Description and Use, of the Sector, Protractor, Plain Scale, and Line of Chords Or, ... Bodies, Especially That of Timber, by the Sli</a>","width":400,"height":300}