{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Zwei Abhandlungen Uber Spharische Trigonometrie: Grundzuge Der Spharischen Trigonometrie Und Allgemeine Spharische Trigonometrie 1753 Und 1779 (German Edition)","author_name":"Leonhard Euler, Ernst Hammer","thumbnail_url":"https://www.ebooknetworking.net/books/114/167/big1141675463.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1141675463.html\">Zwei Abhandlungen Uber Spharische Trigonometrie: Grundzuge Der Spharischen Trigonometrie Und Allgemeine Spharische Trigonometrie 1753 Und 1779 (German Edition)</a>","width":400,"height":300}