{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A practical and theoretical treatise on the detached lever escapement for watches and time pieces","author_name":"Moritz Grossmann, C C. Pierce","thumbnail_url":"https://www.ebooknetworking.net/books/117/575/big1175759902.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1175759902.html\">A practical and theoretical treatise on the detached lever escapement for watches and time pieces</a>","width":400,"height":300}