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Report a problem related to object: Tractatus Georgii Peurbachii super propositiones Ptolemaei [Claudii] de sinubus et chordis. Item Compositio Tabularum sinuum per Ioannem de Regiomonte [t.j. Johann Müller]. Adiectae sunt et Tabulae sinuum duplices per eundem Regiomontanum [...].