A new history of painting in Italy, from the II to the XVI century; (1908)
Crow, Joseph Archer, Sir, 1825-1896, Cavalcaselle, G. B. (Giovanni Battista), 1820-1897 · London, Dent · leaf 40
* Fra Ltjca Pacioli, Summa de Arithm,etica, vol. i., p. 08, tergo, ap. Harzen,vbi aup., Archiv., 1856, p. 236. ^ Vasari, vol. iv., p. 23, states that Piero became blind in 1458. Yet he wasin full possession of his eyesight in 1469 at Urbino, and probably became ailinglater, the words of Pacioli… … i^s^^f^^l^
Painting -- Italy History
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