http://book.klll.cc/ebooks/subject/17658.opds?sort_order=title 2025-08-05T19:21:14Z Books about Circle-squaring (sorted alphabetically) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-08-05T19:21:14Z https://book.klll.cc/ebooks/subject/17658.opds?sort_order=release_date Sort by Release Date 2025-08-05T19:21:14Z https://book.klll.cc/ebooks/subject/17658.opds?sort_order=downloads Sort by Popularity 2025-08-05T19:21:14Z https://book.klll.cc/ebooks/23100.opds Budget of Paradoxes, Volume I Augustus De Morgan 2025-08-05T19:21:14Z https://book.klll.cc/ebooks/26408.opds Budget of Paradoxes, Volume II Augustus De Morgan 2025-08-05T19:21:14Z https://book.klll.cc/ebooks/25387.opds Mathematical Essays and Recreations Hermann Schubert