Columbia subject headings:
Operas--Excerpts--Scores.
Operas--Scores.
Vespasian, Emperor of Rome, 9-79--Drama.
Harvard subject headings:
Operas--Excerpts--Scores
Operas--Scores
Princeton subject headings:
Excerpts.
Operas--Excerpts--Scores.
Operas--Scores.
Operas.
Scores.
Vespasian, Emperor of Rome, 9-79--Drama.