Columbia subject headings:
Harvard subject headings:
Calderón de la Barca, Pedro, 1600-1681--Characters.
Calderón de la Barca, Pedro, 1600-1681--Plots.
Calderón de la Barca, Pedro, 1600-1681--Settings.
Calderón de la Barca, Pedro, 1600-1681--Stories, plots, etc.
Princeton subject headings:
Calderón de la Barca, Pedro, 1600-1681--Characters.
Calderón de la Barca, Pedro, 1600-1681--Plots.
Calderón de la Barca, Pedro, 1600-1681--Settings.