Translated from Russian by A. Mercado ; Translation edited by B. Gollek. [by] A. Ya. Lerner; translated from Russian by E. Gros, translation edited by F. H. George. V. S. Wolkenstein ; translated from the Russian by A. Troitsky ; translation edited by G. Leib. G.V. Samsonov ; translated from Russian by R.N. Hainsworth ; translation edited by D.C. Sherrington. Helmuth Hausen ; translated from the German by M.S. Sayer ; translation edited by A.J. Willmott.