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Start Over You searched for: Holding Institution University of Pennsylvania ✖ Remove constraint Holding Institution: University of Pennsylvania Title Kitāb fī istīʻāb al-wujūh al-mumkinah fī ṣanʻat al-asṭurlāb ✖ Remove constraint Title: Kitāb fī istīʻāb al-wujūh al-mumkinah fī ṣanʻat al-asṭurlāb Keywords Astronomical instruments ✖ Remove constraint Keywords: Astronomical instruments