Columbia subject headings:
Harvard subject headings:
Bayt al-Ḥikmah (Iraq)
Islamic learning and scholarship--Iraq--Baghdad--History.
Islamic learning and scholarship--Islamic Empire--History.
Learned institutions and societies--Iraq--Baghdad.
Princeton subject headings:
Bayt al-Ḥikmah (Iraq)--History.
Islamic civilization.
Learned institutions and societies--Iraq--History.