Keywords: Wilhelm Ostwald.jpg from de Bild Wilhelm Ostwald jpg original from http //www sil si edu/digitalcollections/hst/scientific-identity/explore htm Wilhelm Ostwald 21 August<sup>jul </sup>/ 2 September<sup>greg </sup> 1853 in Riga; 4 April 1932 in Leipzig PD-old DEFAULTSORT Ostwald Wilhelm Wilhelm Ostwald 1900 Popular Science Monthly/Contributors |