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Norma frontespizio libretto. Norma by Vincenzo Bellini Norma di Vincenzo Bellini google it id HJJEAAAAcAAJ hl it hl it pg PA zoom sig ACfUUJeDRlIkIPdSEuzsCzHOclng ci edge books google Editore Truffi Comp Milano Norma opera Libretti of operas by Bellini Opera libretti by Felice Romani opera libretti PDold