{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Safety-Valves: Their History, Antecedents, Invention and Calculation","author_name":"William Barnet Le Van","thumbnail_url":"https://www.ebooknetworking.net/books/B00/9MU/bigB009MUIHUO.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B009MUIHUO.html\">Safety-Valves: Their History, Antecedents, Invention and Calculation</a>","width":400,"height":300}