Columbia subject headings:
Civilization, Medieval--12th century.
Europe--Intellectual life.
Middle Ages--Historiography.
Philosophy, Medieval.
Social history--Medieval, 500-1500.
Harvard subject headings:
Civivlization, Medieval--12th century.
Europe--Intellectual life.
Middle Ages--Historiography
Philosophy, Medieval.
Social history--Medieval, 500-1500
Princeton subject headings:
Civilization, Medieval--12th century.
Middle Ages--Intellectual life.