[by] V. Rydnik. Translated from the Russian by George Yankovsky. by B. V. Gnedenko ; translated from the Russian by George Yankovsky. [by] N. Piskunov ; translated from the Russian by George Yankovsky. A. G. Kurosh; translated from the Russian by George Yankovksy. L. Elsgolts. Translated from the Russian by George Yankovsky. M. Vygodsky ; translated from the Russian by George Yankovsky. N. Piskunov ; translated from the Russian by George Yankovsky. [by] Dyachenko V.F.,translated from the Russian by George Yankovsky. V. A. Fock ; translated from the Russian by Eugene Yankovsky. by M.Korsunsky ;Translated from the Russian by G. Yankovsky.