Translated from the German by Charles J. Hyman. Translated from the 5th German edition by Charles J. Hyman. Translated from the German by P. O. Wolf. translated from the German by Max Wulfinghoff. translated from the Russian by Ram S. Wadhwa. translated from the Russian by Oleg Glebov. translated from the Russian by George Yankovsky. translated from the Russian by Yuri Ermolyev. translated from the Russian by F.Plalkin and V.Palkin. translated from the Russian by N. Komissarova.