http://book.klll.cc/ebooks/author/54124.opds 2026-01-13T03:40:36Z Books by Hall, Frank H. (Frank Henry) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2026-01-13T03:40:36Z https://book.klll.cc/ebooks/67134.opds Dairy Disagreeables Busy the Bacteriologists Frank H. Hall, Harry Alexis Harding, L. A. Rogers, and George A. Smith