. . "Opera." . . "Òpera." . "Opéra." . "Riviere & Son." . . "Òperes Arguments, trames, etc." . . "Operas." . . "Opera's." . . "Oper Führer." . . "Opera, History and criticism." . . "Opera History and criticism." . "Theaterwetenschap." . . "Opéras Histoires, intrigues, etc." . . "Opéras Dictionnaires et encyclopédies." . . "Oper." . . "Ópera Temas." . . "Führer." . . "Xi yang ge ju Jie shao Quan ji." . . "西洋歌剧 介绍 全集." . "Operas Stories, plots, etc." . . "Opéras Encyclopédies." . . . "Kobbe's complete opera book"@en . "Kobbe's complete opera book" . "The complete opera book"@en . "The complete opera book : the stories of the operas, together the leading airs and motives in musical notation"@en . . "Xiyang ge ju gu shi quan ji" . . . "Kobbé's Complete Opera Book. Edited and revised by the Earl of Harewood"@en . . "The Complete Opera Book ... The stories of the operas ... Illustrated with ... portraits ... and scenes, etc. [With contributions by Katherine Wright.]"@en . . "The complete opera book : the stories of the operas, together with leading airs and motives in musical notation" . . "The complete opera book : the stories of the operas, together with leading airs and motives in musical notation"@en . . . "The Complete Opera Book, etc. [With contributions by Katharine Wright and Ferruccio Bonavia.]"@en . . . . . . . . "The complete opera book; the stories of the operas, together with leading airs and motives in musical notation"@en . . . . . . . . . . . . "The Complete Opera Book : the Stories of the Operas, Together With Leading Airs and Motives in Musical Notation" . . . "Ben shu zhu yao jie shao le bao gua ge lu ke yi qian de ge ju, ge lu ke, mo zha te, bei duo fen, wei bai, cong zong lun wa ge na yi qian de ge ju, cong wei bai dao wa ge na, wa ge na, luo xi ni, bei li ni, duo ni cai di deng de ge ju nei rong." . . "The complete opera book; the stories of the operas"@en . "The complete opera book; the stories of the operas" . . . . . . . . . "The Complete Opera Book, etc. [With contributions by Ferruccio Bonavia and Katharine Wright.]"@en . . . . . . . . . . "Kobbè's complete opera book" . . . . . . . . "西洋歌剧故事全集" . "The complete opera book : The stories of the operas, together with 400 of the leading airs and motives in musical notation" . . "Gidsen (vorm)" . . . . "Stories, plots, etc" . "Stories, plots, etc"@en . . . . . . . . . . . . . "The complete opera book : the stories of the operas" . "The complete opera book : the stories of the operas"@en . . "[Gustav] Kobbé's Complete Opera Book" . . "Complete Opera Book" . . "Complete opera book"@en . "Complete opera book" . . . . . . . . . . . . . . . . . . . . . . . . . . . . "For other editions, see Author Catalog."@en . "Kobbes complete opera book" . "Kobbe's complete opera book, ed. and rev. by The Earl of Harewood" . . . "Kobbe's Complete opera book. Edited and revised by the earl of Harewood" . "Kobbé's Complete opera book" . . . "The Complete Opera Book, etc. [With contributions by K. Wright.]"@en . "The complete Opera book : the stories of the operas, together with Leading Airs and motives in musical notation" . . . . . . . "Kobbe's complete opera book. Edited and revised by the earl of Harewood" . . . . . . . . . . . . "The complete opera-book" . . . . . . . . "Kobbé's complete opera book : Ed. and rev. by the Earl of Harewood" . . "Kobbé's complete opera book. Edited and rev. by the Earl of Harewood"@en . . "Kobbé's Complete Opera Book, etc. (Revised edition.)"@en . . . . . . . . . . . . . . . "Complete opera book"@en . "Complete opera book" . . . "Kobbé's complete opera book : Ed. and rev. by the earl of Harewood" . . "The Complete opera book"@en . . . "Kobbe's Complete Opera Book" . "Kobbe's Complete Opera Book"@en . . . "The complete opera book the stories of the operas"@en . . . . . . . . . . "西洋歌劇故事全集" . "The complete opera book : the stories of operas, together with leading airs and motives in musical notation"@en . . . . "Xi yang ge ju gu shi quan ji" . . . . . . . . . . "The complete opera book : the stories of the operas, together with the leading airs and motives in musical notation"@en . . . . . . . . . . "Kobbé's complete opera book"@en . "Kobbé's complete opera book" . "Kobbé's complete opera book"@da . . . . . "Kobbe's complete opera book edited and rev. by the earl of harewood" . . . . . . . "Kobbé 's complete opera book" . "Führer" . . . "Vocal Music." . . "Dramatic vocal forms." . . "Muziek." . . "Opera in musica Enciclopedie e dizionari." . . "Opéras Intrigues." . . "Ópera - Historia y crítica." . .