. . . . . "The friar and the cipher" . . . . . . . . . . . . "The friar and the cipher : Roger Bacon and the unsolved mystery of the most unusual manuscript in the world" . . "The friar and the cipher : Roger Bacon and the unsolved mystery of the most unusual manuscript in the world"@en . "Electronic books"@en . "A study of the mystery of the Voynich Manuscript, discovered in 1912, examines the theory that thirteenth-century astronomer Roger Bacon was the author of the book, which is written in an indecipherable language and code that remains unsolved."@en . . "A study of the mystery of the Voynich Manuscript, discovered in 1912, examines the theory that thirteenth-century astronomer Roger Bacon was the author of the book, which is written in an indecipherable language and code that remains unsolved." . . . . . "The friar and the cipher Roger Bacon and the unsolved mystery of the most unusual manuscript in the world"@en . . . . . . "Manuscrit de Voynich." . . "Geschichte" . . "Voynich manuscript." . . "Voynich manuscript" . "Geschichte." . . "ANTIQUES & COLLECTIBLES / General" . . "Voynich manuscript." . .