https://en.wikipedia.org/wiki/Regiomontanus
Regiomontanus - Wikipedia
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Regiomontanus - Defensio Theonis
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Johann Muller (Regiomontanus) | Catholic Answers Encyclopedia
Muller (Regiomontanus), Johann, German astronomer, b. in or near Konigsberg, a small town in lower Franconia (Dukedom of Coburg), June 6, 1436; d. in Rome,...
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