Subject Count
Opera adaptations 72
Opera -- Adaptations -- Drama 1
Opera -- Addresses, essays, lectures 1
Opera -- Aesthetics 2
Opera Aesthetics 1
Opera -- Africa 1
Opera -- Africa, North 2
Opéra -- Allemagne -- Berlin -- 1970- 1
Opera -- Almanacs, yearbooks, etc 1
Opera -- Analysis, appreciation 14
Opera -- Analysis, appreciation -- 20th century 1
Opera -- Analysis, appreciation -- 21st century 1
Opera and law 1
Opera and Musical Theatre 1
Opera and technology 3
Opera and technology -- History 1
Opera and technology -- History -- 19th century 2
Opera -- Anecdotes 6
Opéra -- Angleterre -- Londres -- 18e siècle 1
Opera -- Anthropological aspects 4
Opera -- Argentina 1
Opera -- Argentina -- Buenos Aires 1
Opera -- Argentina -- Buenos Aires -- History 2
Opera -- Argentina -- Reviews 1
Opera -- Argumentos, tramas, etc 1
Opera -- Armenia 1
Opera -- Armenia (Republic) -- Yerevan 1
Opera, Armenian 1
Opéra -- Aspect social 2
Opéra -- Aspect social -- États-Unis 1
Opéra -- Aspect social -- France 1
Opéra -- Aspect social -- Italie 1
Opera audiences 9
Opera audiences -- France -- Paris 1
Opera audiences -- Russia -- History -- 20th century 1
Opera audiences -- Sweden 1
Opera -- Australia 1
Opera -- Australia -- South Australia -- Chronology 1
Opera -- Austria 5
Opera -- Austria -- 18th century 2
Opera -- Austria -- 19th century 1
Opera -- Austria -- 20th century 1
Opera -- Austria -- Congresses 1
Opera -- Austria -- Eisenstadt 2
Opera -- Austria -- Graz 1
Opera -- Austria -- History 1
Opera -- Austria -- Salzburg 1
Opera -- Austria -- Salzburg -- 20th century 1
Opera -- Austria -- Salzburg -- 20th century -- Congresses 1
Opera -- Austria -- Vienna 24
Opera -- Austria -- Vienna -- 17th century 4
Opera -- Austria -- Vienna -- 17th century -- Congresses 1
Opera -- Austria -- Vienna -- 18th century 17
Opera -- Austria -- Vienna -- 18th century -- Congresses 2
Opera -- Austria -- Vienna -- 19th century 15
Opera -- Austria -- Vienna -- 19th century -- Reviews 1
Opera -- Austria -- Vienna -- 20th century 7
Opera -- Austria -- Vienna -- 20th century -- Chronology 1
Opera -- Austria -- Vienna -- 20th century -- Congresses 1
Opera -- Austria -- Vienna -- 20th century -- Exhibitions 1