Columbia subject headings:
Harvard subject headings:
Classification of sciences--History.
Khuwārizmī, Muḥammad ibn Aḥmad, -997 or 998
Princeton subject headings:
Classification of sciences.
Khuwārizmī, Muḥammad ibn Aḥmad, -997 or 998.
Khuwārizmī, Muḥammad ibn Aḥmad, -997 or 998. Mafātiḥ al-ʻulūm.
Muslim scientists--Islamic Empire--Biography.