Columbia subject headings:
Harvard subject headings:
English drama--20th century--History and criticism
English drama--21st century--History and criticism.
German drama--20th century--History and criticism.
German drama--21st century--History and criticism.
Greek drama (Tragedy)--Appreciation.
Theater--History.
Princeton subject headings:
English drama--20th century--History and criticism.
English drama--21st century--History and criticism.
German drama--20th century--History and criticism.
German drama--21st century--History and criticism.
Greek drama (Tragedy)--Appreciation.
Theater--History.