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Syndication

Tue, 10 June 2014
Norteko Ferrokarrilla/2014-06-02/Leonardoren autoerretratua

Leonardo da Vincik duela 500 urte marraztu zuen autorretratu bat klariona gorriz paperaren gainean, eta, orain, marrazkia desagertzen ari da. Margultzen ari da. Paperaren horitze prozesuak eta pigmentuaren degradazioa dira horren errudun.

Direct download: NFXVIII-39a.mp3
Category:science -- posted at: 3:32am EDT