Columbia subject headings:
German literature--20th century--History and criticism.
German literature--21st century--History and criticism.
Mass media--History--20th century.
Mass media--History--21st century.
Harvard subject headings:
German literature--20th century--History and criticism
German literature--21st century--History and criticism
Mass media--History--20th century.
Mass media--History--21st century.
Princeton subject headings:
German literature--20th century--History and criticism.
German literature--21st century--History and criticism.
Mass media--History--20th century.
Mass media--History--21st century.