{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Essentials of drafting: a textbook on mechanical drawing and machine drawing, with chapters and problems on materials, stresses, machine construction and weight estimating","author_name":"Carl L. Svensen","thumbnail_url":"https://www.ebooknetworking.net/books/B00/7LO/bigB007LOEGFS.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B007LOEGFS.html\">Essentials of drafting: a textbook on mechanical drawing and machine drawing, with chapters and problems on materials, stresses, machine construction and weight estimating</a>","width":400,"height":300}