by Heinrich Zollinger ; translated by Harry E. Nursten. Heinrich Haberlin ; translated by Herbert Eppel. by Max Planck ; translated by Henry L. Brose. by Max Planck. Translated by Henry L. Brose. Heinrich Klotz ; translated by Radka Donnell. by Witold Nowacki ; translated by Henryk Zorski. by Ding Cong ; translated by Ma Mingtong by Guy Seguier ; translated by E. Griffin. by Heinz Hossdorf ; translated by C. Van Amerongen.