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- Samtī, Yūsuf ibn Khālid, -805 or 8061
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- Sanūsī, Muḥammad ibn Yūsuf, approximately 1427-approximately 1490. Sharḥ al-Mukhtaṣar fī al-manṭiq1
- Sanūsī, Muḥammad ibn Yūsuf, approximately 1427-approximately 1490. ʻAqīdah al-ṣughrá1
- Satellites--Phases1
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- Science1
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- Sea monsters1
- Serbia1