{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Vorlesungen über das Pfaff´sche Problem: und die Theorie der partiellen Differentialgleichungen erster ordnung (German Edition)","author_name":"Weber, Eduard von","thumbnail_url":"https://www.ebooknetworking.net/books/142/970/big1429705469.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1429705469.html\">Vorlesungen über das Pfaff´sche Problem: und die Theorie der partiellen Differentialgleichungen erster ordnung (German Edition)</a>","width":400,"height":300}