http://book.klll.cc/ebooks/author/36335.opds?sort_order=downloads 2025-11-18T06:47:40Z Books by Hurwitz, Wallie Abraham Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-18T06:47:40Z https://en.wikipedia.org/wiki/Wallie_Abraham_Hurwitz See also: en.wikipedia 2025-11-18T06:47:40Z https://book.klll.cc/ebooks/33330.opds Randwertaufgaben bei Systemen von linearen partiellen Differentialgleichungen erster Ordnung (German) Wallie Abraham Hurwitz