DEVICE FOR OPENING AND CLOSING DOOR LEAVES OF ELEVATOR CAGE von NIKISHIN N.P, KOSAREV S.S, RADIN JU.V, VAKSMAN M.A

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MUFFLER OF INTERNAL COMBUSTION ENGINE von GRJAZNOV S.G, TRUSOV A.V, GALEVKO JU.V, OLEJNIK A.V, AFANAS'EV A.N, TEN V.A, NADAREJSHVILI G.G, GALEVKO V.V, MANYSHEV JU.V, RADIN I.N

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