http://book.klll.cc/ebooks/author/48943.opds?sort_order=release_date 2025-11-15T04:29:03Z Books by Hermann, Conrad Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-15T04:29:03Z https://de.wikipedia.org/wiki/Conrad_Hermann See also: de.wikipedia 2025-11-15T04:29:03Z https://book.klll.cc/ebooks/56606.opds Aesthetische Farbenlehre (German) Conrad Hermann