Columbia subject headings:
Classical drama (Tragedy)--Adaptations--History and criticism.
Experimental theater--Classical influences--History and criticism.
Harvard subject headings:
Classical drama (Tragedy)--Adaptations--History and criticism.
Experimental theater--Classical influences--History and criticism.
Princeton subject headings:
Classical drama (Tragedy)--Adaptations--History and criticism.
Experimental theater--Classical influences--History and criticism.