http://book.klll.cc/ebooks/subject/9510.opds 2025-08-14T18:22:28Z Books about Numerals (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 2025-08-14T18:22:28Z https://book.klll.cc/ebooks/22599.opds The Hindu-Arabic Numerals David Eugene Smith and Louis Charles Karpinski