Columbia subject headings:
Abbasids.
Finance, Public--Islamic Empire--History.
Fiscal policy--Islamic Empire--History.
Islamic Empire--Economic policy.
Islamic Empire--History--750-1258.
Monetary policy--Islamic Empire--History.
Harvard subject headings:
Finance, Public--Islamic Empire
Islamic Empire--Economic conditions.
Islamic Empire--Economic policy.
Islamic Empire--History--750-1258
Princeton subject headings:
Abbasids.
Finance, Public--Islamic Empire--History.
Fiscal policy--Islamic Empire--History.
Islamic Empire--Economic policy.
Islamic Empire--History--750-1258.
Monetary policy--Islamic Empire--History.