A-Z of opera /

by Hamilton, Mary 1961-
Published 1990

Encyclopedia of the opera /

by Ewen, David 1907-1985
Published 1955

Opera : compositores, obras, intérpretes /

by Batta, András
Published 1999

Opera : composers, works, performers /

by Batta, András
Published 2000

Dictionary-catalogue of operas and operettas /

Published 1967

Encyclopedia of the opera /

by Ewen, David 1907-1985
Published 1956

La ópera : enciclopedia del arte lírico.

Published 1979

Concise Oxford dictionary of opera /

by Rosenthal, Harold 1917-1987
Published 1964

Concise Oxford dictionary of opera /

by Rosenthal, Harold 1917-1987
Published 1979

The Metropolitan Opera encyclopedia : a comprehensive guide to the world of opera

Published 1987

Opera : the rough guide /

by Boyden, Matthew, Boyden, Matthew
Published 1997