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UNE 25082:1955 LEAF SPRINGS FOR RAILWAY MATERIAL. COLD OR HOT CLAMPED SPRINGS. CANDLES, ABUTMENTS, HOLDERS AND HAND SPRING RIGGING GEAR. ERECTION JETS.
UNE 25041:1955 DRAW AND BUFFER SPRING FOR RAILWAY MATERIAL OF NARROW TRACK GANGE.
UNE 28012-9:1955 WOODS USED IN AIRCRAFT. RADIAL TRACTION TEST.
UNE 28014:1955 WOODS USED IN AIRCRAFT. EXTRALIGHT WOODS. CHARACTERISTICS.
UNE 28012-7:1955 WOODS USED IN AIRCRAFT. ELASTICITY TEST.
UNE 28012-8:1955 WOODS USED IN AIRCRAFT. AXIAL TRACTION TEST.
UNE 30028:1954 DENSITY AND COMPOSITION OF PURE AQUEOUS SOLUTIONS OF SULPHURIC ACID.