De Gradibus
De Gradibus was an Arabic book published by the Arab physician Al-Kindi (c. 801–873 CE).
De Gradibus was an Arabic book published by the Arab physician Al-Kindi (c. 801–873 CE).
De Gradibus was an Arabic book published by the Arab physician Al-Kindi (c. 801–873 CE).
Source: Wikipedia "De Gradibus" · CC BY-SA 4.0
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