Columbia subject headings:
Berlin (Germany)--In literature--Congresses.
German literature--History and criticism--Congresses.
Madrid (Spain)--In literature--Congresses.
Spanish literature--History and criticism--Congresses.
Harvard subject headings:
Berlin (Germany)--In literature--Congresses.
German literature--History and criticism--Congresses
Madrid (Spain)--In literature--Congresses.
Spanish literature--History and criticism--Congresses
Princeton subject headings:
Berlin (Germany)--In literature--Congresses.
German literature--History and criticism--Congresses.
Madrid (Spain)--In literature--Congresses.
Spanish literature--History and criticism--Congresses.