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found: His Documenti e memorie riguardanti Leonardo da Vinci a Bologna e in Emilia, 1953.
found: Kodeks Leonardo, c1984: colophon (prof. Karlo Pedretti)
found: Leonardos broar, c1993: t.p. (Carlo Pedretti)
found: Information from 678 converted Dec. 8, 2014 (nato a Bologna 1928)