(NkONSTANTIN |DUARDOWI^ cIOLKOWSKIJ(B. (NeGO VIZNX I DEQTELXNOSTX (B/s - (NaRLAZOROW(B, (Nm(B.(Ns(B.s ((NmOSKWA (B:s (NgOSTEHIZDAT(B,s, 1957)