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13th-century astronomers
13th-century astronomers by nationality
John Pediasimos
Isa Kelemechi
Isaac ibn Sid
Muhyi al-Dīn al-Maghribī
Shams al-Dīn al-Samarqandī
Mo'ayyeduddin Urdi
Athīr al-Dīn al-Abharī
Johannes de Sacrobosco
Robertus Anglicus
Zag de Sujurmenza
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