http://book.klll.cc/ebooks/author/36530.opds?sort_order=title 2025-11-16T13:01:58Z Books by Sacro Bosco, Joannes de, active 1230 Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-16T13:01:58Z https://book.klll.cc/ebooks/25664.opds Earliest Arithmetics in English