@misc{_[Leonardo, address={[Breslau]}, howpublished={online}, language={ita}, title={[Leonardo da Vinci]}, keywords={photography, graphics, engraving, copperplate, photographic reproduction, portrait, men, bust, clothing, hairstyle, photographic print (black and white), albumen print, carte de visite, scientist, humanist, artists, Italian, 18 w., 19 w., 1900-1945}, }