under the editorship of professor G. N. Yakovlev ; translated from the Russian by Irene Aleksanova. P. E. Danko, A. G. Popov, T. Ya. Kozhevnikova ; translated from the Russian by Irene Aleksanova. N. G. Chetaev ; translatd from the Russian by Irene Aleksanova. N. N. Trapeznikov, V. P. Letyagin, D. A. Aliev ; translated from the Russian by Ludmila Aksenova. edited by N. G. Basov. ; translated from the Russian by P. S. Ivanov. A. G. Sveshnikov and A. N. Tikhonov ; translated from the Russian by George Yankovsky.