Columbia subject headings:
Europe--History--476-1492.
Race awareness--Europe--History--To 1500.
Race relations--History--To 1500.
Race--History--To 1500.
Harvard subject headings:
Europe--History--476-1492.
Race awareness--Europe--History--To 1500.
Race relations--History--To 1500.
Race--History--To 1500.
Princeton subject headings:
Ethnicity--Europe--History.
Europeans--Race identity--History.
Race awareness--Europe--History.