{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The art of sound building, demonstrated in geometrical problems: shewing geometrical lines for all kinds of arches, niches, groins, and twisted rails, ... and irregular ... By William Halfpenny, ...","author_name":"William Halfpenny","thumbnail_url":"https://www.ebooknetworking.net/books/117/048/big1170482902.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1170482902.html\">The art of sound building, demonstrated in geometrical problems: shewing geometrical lines for all kinds of arches, niches, groins, and twisted rails, ... and irregular ... By William Halfpenny, ...</a>","width":400,"height":300}