Columbia subject headings:
Drama--Technique--History--To 1500.
Theater--History--Medieval, 500-1500.
Harvard subject headings:
Drama, Medieval--History and criticism.
Drama--Technique
Drama--Technique--History--To 1500.
Theater--History--Medieval, 500-1500.
Princeton subject headings:
Drama, Medieval--History and criticism.
Drama--Technique.
Theater--History--Medieval, 500-1500.