"Opéras Histoires, intrigues, etc. Encyclopédie." . . "Earl of Harewood." . . "Oper." . . "Operas Stories, plots, etc." . . "Opera." . . "Führer." . . "Operas." . . . . "Opera - History and criticism." . . . . "The new Kobbe's opera book" . . . . . . . "The new Kobbé's opera book" . "The new Kobbé's opera book"@en . . "Kobbé's opera book" . "Kobbé's opera book"@en . . . . . . . "Presents critical summaries of almost five-hundred operas, along with biographical information on the composers. Presented chronologically by composer." . . "Kobbé's complete opera book"@en . . . . "The New Kobbé's opera book" . . . . . . . . . . . . . "Stories, plots, etc" . "Stories, plots, etc"@en . . . . . . . . . . .