Columbia subject headings:
Offenbach, Jacques, 1819-1880--Appreciation.
Opera--19th century.
Opera--20th century.
Harvard subject headings:
Offenbach, Jacques, 1819-1880--Appreciation.
Opera--19th century
Opera--20th century
Princeton subject headings:
Offenbach, Jacques, 1819-1880--Appreciation.
Opera--19th century.
Opera--20th century.