http://book.klll.cc/ebooks/author/26290.opds?sort_order=release_date 2025-11-16T10:28:17Z Books by Uphues, Goswin Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-16T10:28:17Z https://en.wikipedia.org/wiki/Goswin_Karl_Uphues See also: en.wikipedia 2025-11-16T10:28:17Z https://book.klll.cc/ebooks/24172.opds Einführung in die moderne Logik. Erster Teil. (German) Goswin Uphues