http://book.klll.cc/ebooks/author/33883.opds 2025-08-29T08:47:34Z Books by Friedl, Herman (sorted by popularity) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-08-29T08:47:34Z https://book.klll.cc/ebooks/29375.opds Manufacturing Cost Data on Artificial Ice Otto Luhr and Herman Friedl