http://book.klll.cc/ebooks/author/42941.opds 2025-11-14T19:28:33Z Books by Arthur, James Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-14T19:28:33Z https://book.klll.cc/ebooks/44838.opds Time and Its Measurement James Arthur