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Contents: Effects of chromatic astronomical refraction on the guiding of a long focus telescope, by O.A. Melnikov, G.G. Lengauer, N.F. Kuprevich; Certain possibilities of utilizing photoelectric and television methods for combating noise from atmospheric turbulence during astronomical observations, by N.F. Kuprevich; Variability of the astroclimate, by G.I. Bol' shakova, Sh. P. Darchiya; Fast, wide angle telescope of large diameter, by T.S. Belorossova, D.D. Maksutov, N.V. Merman, M.A. Sosnina.