http://book.klll.cc/ebooks/author/44253.opds?sort_order=release_date 2026-01-13T19:13:50Z Books by Frobenius, Herman Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2026-01-13T19:13:50Z http://de.wikipedia.org/wiki/Hermann_Frobenius See also: de.wikipedia 2026-01-13T19:13:50Z https://book.klll.cc/ebooks/47322.opds Alfried Krupp: Ein Lebensbild (German) Herman Frobenius