http://book.klll.cc/ebooks/author/58229.opds?sort_order=title 2025-11-15T14:27:29Z Books by Kósa, Miklós Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-15T14:27:29Z https://hu.wikipedia.org/wiki/K%C3%B3sa_Mikl%C3%B3s See also: hu.wikipedia 2025-11-15T14:27:29Z https://book.klll.cc/ebooks/75946.opds Feltalálók, felfedezők, nagy emberek (Hungarian) Wilhelm Ostwald