(NvELEZOBETONNYE NAPORNYE TRUBY (B/s - (NoWSQNKIN(B, (Nw(B.(Ni(B.s ((NmOSKWA (B:s (NlENINGRAD (B:s (NsTROJIZDAT(B,s, 1951)
Keywords: (NnAPORNYE TRUBYs