Columbia subject headings:
Baghdad (Iraq)--Intellectual life.
Baghdad (Iraq)--Politics and government.
Iraq--History--634-1534.
Motazilites--Iraq--Baghdad.
Harvard subject headings:
Baghdad (Iraq)--Intellectual life.
Baghdad (Iraq)--Politics and government.
Iraq--History--634-1534.
Motazilites--Iraq--Baghdad.
Princeton subject headings:
Baghdad (Iraq)--Intellectual life.
Baghdad (Iraq)--Politics and government.
Iraq--History--634-1534.
Motazilites.