{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Beauty of Mechanical Calculators: Focusing on wind-up type manual calculators (Japanese Edition)","author_name":"Yuuzou Watanabe","thumbnail_url":"https://www.ebooknetworking.net/books/B00/KHH/bigB00KHHXIUA.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B00KHHXIUA.html\">Beauty of Mechanical Calculators: Focusing on wind-up type manual calculators (Japanese Edition)</a>","width":400,"height":300}