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Books about Fregni:
L'album di scenotecnica di Koki Fregni by C. Ossicini P. Bignami (Jan 1, 2008)
Paris Houses (Tools) [Paperback] [Acc] (Author) Maria Cristina Fregni (1200)
Koki: Scenografo : il libro di Giuseppe Fregni (Italian Edition) (1995)
Wiki information Fregni:
Mirella Freni is an Italian opera soprano whose repertoire includes Verdi, Puccini, Mozart and Tchaikovsky. Freni was married for many years to the Bulgarian bass Nicolai Ghiaurov, with whom she performed and recorded.