Viktor G. Berezkin ; tr. from Russian by Ettre L.S. V.A. Ivensen ; tr. from Russian by Eric Renner. A.I. Berezhnoi ; tr. from Russian by Stanley A. Merson. tr. by B. Gollek ; tr. from Russian by A. Mercado. ed. by G.S. Landsberg ; tr. from Russian by A. Troitsky. V.G. Berezkin ; tr. by L.S. Ettre. V.N. Tsytovich ; tr. from Russian by J.S. Wood. ed. by L.D. Rozenberg ; tr. from Russian by James S. Wood. ed. by M.A. Leontovich ; tr. from Russian by Dave Parsons.