http://book.klll.cc/ebooks/subject/36822.opds 2025-08-22T02:13:09Z Books about Money -- Origin (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 2025-08-22T02:13:09Z https://book.klll.cc/ebooks/66160.opds The Origin of Metallic Currency and Weight Standards William Ridgeway