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by Owen Gingerich and Alain Segonds. New York: Dover, 1993. ISBN 978-0-486-67605-0 Connor, James A. Kepler's Witch: An Astronomer's Discovery of Cosmic...100 KB (12,456 words) - 16:25, 15 May 2024
gov/pmc/articles/PMC6395789/ Caspar, Max (1993). Kepler. New York: Dover. ISBN 9780486676050. I. Newton, Principia, p. 408 in the translation of I.B. Cohen and A...57 KB (8,352 words) - 20:00, 20 May 2024
