Columbia subject headings:
Operas--Scores.
Sebastião, King of Portugal, 1554-1578--Drama.
Harvard subject headings:
Operas--Scores
Sebastião, King of Portugal, 1554-1578--Drama.
Princeton subject headings:
Operas--Scores.
Operas.
Scores.
Sebastião, King of Portugal, 1554-1578--Drama.