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UNE 40097:1975 DESIGNATION OF YARNS FOR FISHING NETS IN TEX SYSTEM.
UNE 20549:1975 MAXIMUM CASE DIMENSIONS FOR CAPACITORS AND RESISTORS
UNE 20522:1975 METHOD OF MEASUREMENT OF NON-LINEARITY IN RESISTORS
UNE 20551:1975 SPEED FLUCTUATIONS IN SOUND RECORDING AND REPRODUCING EQUIPMENT: METHOD OF MEASUREMENT
UNE 27767-1:1975 WATERTIGHT CROSSINGS FOR DOUBLE BOTTOM.
UNE 27682:1975 SHUTTERS FOR SELF-CLOSING SIDE DISCHARGE VALVES.
UNE 27683:1975 'PLATES FOR ''F'' TYPE SHUTTERS FOR DISCHARGE VALVES.'
UNE 27685:1975 FRIEZE GASKETS SHUTTERS FOR DISCHARGE VALVES.