http://book.klll.cc/ebooks/subject/5957.opds?sort_order=title 2025-11-14T18:30:44Z Books about Kepler, Johannes, 1571-1630 Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-14T18:30:44Z https://book.klll.cc/ebooks/12406.opds Kepler Walter W. Bryant 2025-11-14T18:30:44Z https://book.klll.cc/ebooks/43877.opds Life of Galileo Galilei, with Illustrations of the Advancement of Experimental Philosophy John Elliot Drinkwater Bethune 2025-11-14T18:30:44Z https://book.klll.cc/ebooks/25992.opds Martyrs of Science, or, The lives of Galileo, Tycho Brahe, and Kepler David Brewster