. . "Summa de arithmetica" . . . "Summa de arithmetica, geometria, proportioni e proportionalit\u00E0" . "Summa de Arithmetica" . "Summary of arithmetic, geometry, proportions and proportionality" . . . "Summa de arithmetica, geometrica, proportioni et proportionalit\u00E0" . . "Summa de Arithmetica, Geometria, Proportioni et Proportionalita (Everything About Arithmetic, Geometry and Proportion)" . . "Summa de arithmetica, geometria, proportioni et proportionalit\u00E0" . . . "Summa de arithmetica" . . . "615" . "Summa de Arithmetica, Geometria, Proportioni et Proportionalita" . . . . . "Summa de Arithmetica, Geometria, Proportioni et Proportionalit\u00E0" . .