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UNE 66049:1978 ESTIMATION OF THE MEAN OF A LOT (VARIANCE UNKNOWN)
UNE 66050:1978 COMPARISON OF THE MEAN OF A LOT WITH A GIVEN VALUE (VARIANCE UNKNOWN)
UNE 66051:1978 ESTIMATION OF THE DIFFERENCE OF TWO MEANS (VARIANCES UNKNOWN, BUT MAY BE ASSUMED EQUAL)
UNE 25204:1978 'SUSPENSION SPRING OF DOUBLE RING ''ORE'' TYPE.'
UNE 66052:1978 COMPARISON OF THE MEANS OF TWO LOTS (VARIANCES UNKNOWN, BUT MAY BE ASSUMED EQUAL)
UNE 21358:1978 ELECTRICAL INSULATING MATERIALS. INSULATING VARNISHES. DETERMINATION OF AGGLUTINATING POWER BY THE HELICOIDAL COIL METHOD.
UNE 28508:1978 AIRCRAFT. CONNECTION FOR WATER OF DRINKABLE QUALITY.
UNE 55022:1978 FATS. REFINED GRAPESTONE OIL FOR INDUSTRIAL USES.