[by] O.V. Kovalev. Translated from the Russian, by A. Murray Gross. V. A. Kovalevsky ; translated from the Russian by Arthur Brown. [by] V. Sushkov. Translated from the Russian by H. Hanna. by A.I. Lurie ; translated from the Russian by K.A. Lurie. V.V. Petrov ; translated from the Russian by A.A. Brown. [by] V. Tsegelsky. Translated from the Russian by B. Kuznetsov. by E. G. Gol'?teǐn. [Translated from the Russian by K. Makowski.] [by] N. S. Landkof. Translated from the Russian by A. P. Doohovskoy. I.V. Savelyev ; translated from the Russian by G. Leib. A. Komar ; translated from the Russian by I. Savin.