(NsPRAWO^NIK PO OHRANE TRUDA W SELXSKOM HOZQJSTWE (B/s - (NbETEREW(B, (Nm(B.(Nm(B.s; (NbOLX[OW(B, (Nm(B.(Nm(B.s ((NmOSKWA (B:s (NiZD(B-(NWA msh sssr (B,s, 1957)
Keywords: (NoHRANA TRUDAs