http://book.klll.cc/ebooks/author/6426.opds?sort_order=downloads2025-11-15T04:30:54ZBooks by Copernicus, NicolausFree eBooks since 1971.Project Gutenberghttps://book.klll.ccwebmaster@gutenberg.orghttps://book.klll.cc/gutenberg/favicon.ico2512025-11-15T04:30:54Zhttps://en.wikipedia.org/wiki/Nicolaus_CopernicusSee also: en.wikipedia2025-11-15T04:30:54Zhttps://book.klll.cc/ebooks/13182.opdsPrefaces and prologues to famous books : with introductions, notes and illustrations704 downloads