Columbia subject headings:
Baghdad (Iraq)--Civilization.
Baghdad (Iraq)--History.
Islam--Iraq--History.
Islamic civilization.
Islamic learning and scholarship--Iraq--Baghdad.
Harvard subject headings:
Baghdad (Iraq)--Civilization.
Baghdad (Iraq)--History.
Islam--Iraq--History.
Islamic civilization.
Islamic learning and scholarship--Iraq--Baghdad.
Princeton subject headings:
Baghdad (Iraq)--Civilization.
Baghdad (Iraq)--History.
Islam--Iraq--History.
Islamic civilization.
Islamic learning and scholarship--Iraq--Baghdad.