Columbia subject headings:
Calderón de la Barca, Pedro, 1600-1681--Criticism and interpretation--Congresses.
Harvard subject headings:
Calderón de la Barca, Pedro, 1600-1681--Criticism and interpretation--Congresses.
Princeton subject headings:
Calderón de la Barca, Pedro, 1600-1681--Criticism and interpretation--Congresses.