http://book.klll.cc/ebooks/author/48801.opds 2025-11-15T10:00:19Z Books by Uppenborn, Friedrich Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-15T10:00:19Z https://de.wikipedia.org/wiki/Friedrich_Uppenborn See also: de.wikipedia 2025-11-15T10:00:19Z https://book.klll.cc/ebooks/56365.opds History of the Transformer Friedrich Uppenborn