{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Structures of Change in the Mechanical Age: Technological Innovation in the United States, 1790-1865 (Johns Hopkins Studies in the History of Technology)","author_name":"Ross Thomson","thumbnail_url":"https://www.ebooknetworking.net/books/080/189/big0801891418.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0801891418.html\">Structures of Change in the Mechanical Age: Technological Innovation in the United States, 1790-1865 (Johns Hopkins Studies in the History of Technology)</a>","width":400,"height":300}