{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The sheet metal workers instructor, for zinc, sheet iron, copper and tin plate workers, & c: Containing a selection of geometrical problems, also practical ... the different branches of the above trades","author_name":"Reuben Henry Warn","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0000EF1DN.html\">The sheet metal workers instructor, for zinc, sheet iron, copper and tin plate workers, &amp; c: Containing a selection of geometrical problems, also practical ... the different branches of the above trades</a>","width":400,"height":300}