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Start Over You searched for: Title Risālah ✖ Remove constraint Title: Risālah Author ʻAbd al-ʻAzīz ibn Muḥammad Wafāʼī ✖ Remove constraint Author: ʻAbd al-ʻAzīz ibn Muḥammad Wafāʼī Keywords Astronomical instruments ✖ Remove constraint Keywords: Astronomical instruments