http://book.klll.cc/ebooks/author/53661.opds?sort_order=release_date 2025-11-17T10:33:09Z Books by Ridgeway, William Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-17T10:33:09Z https://en.wikipedia.org/wiki/William_Ridgeway See also: en.wikipedia 2025-11-17T10:33:09Z https://book.klll.cc/ebooks/66160.opds The Origin of Metallic Currency and Weight Standards William Ridgeway