Columbia subject headings:
Harvard subject headings:
Mozart, Wolfgang Amadeus, 1756-1791--Manuscripts--Facsimiles.
Music--Manuscripts--Facsimiles.
Operas--Scores
Princeton subject headings:
Mozart, Wolfgang Amadeus, 1756-1791--Manuscripts--Facsimiles.
Operas--Scores.
Operas.
Scores.