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UNE 25222:1971 STEEL STRUCTURAL SHAPES. SLOPING FLAGE CHANNEL SECTIONS. GENERAL DIMENSIONS.
UNE 25223:1971 STEEL STRUCTURAL SHAPES. EQUAL-LEG ANGLES. GENERAL DIMENSIONS.
UNE 25224:1971 STEEL STRUCTURAL SHAPES. UNEQUAL-LEG ANGLES. GENERAL DIMENSIONS.
UNE 64013:1971 MIXED FEEDS AND RAW MATERIALS. QUANTITATIVE DETERMINATION OF HUMIDITY AND VOLATILE MATTER. PREVIOUS DISSECATION METHOD.
UNE 64015:1971 MIXED FEEDS AND RAW MATERIALS. QUANTITATIVE DETERMINATION OF HUMIDITY AND VOLATILE MATTER. HOT DISSECATION METHOD.
UNE 64017:1971 COMPOUND FEEDS AND RAW MATERIALS. QUANTITATIVE DETERMINATION OF PHOSPHOROUS. COLORIMETRIC METHOD OF PHOSPHONIOLIBDOVANTE.
UNE 64019:1971 MIXED FEEDS AND RAW MATERIALS. QUANTITATIVE DETERMINATION OF ASHES.
UNE 36101:1971 UNALLOY IRON OR PIG INGOT. TYPES AND GRADES.
UNE 36102:1971 UNALLOY IRON OR PIG INGOT. TECHNICAL CONDITIONS FOR RECEPTION AND SUPPLY.
UNE 21052:1971 COMPACT ALUMINIUM STEEL CABLES FOR OVERHEAD TRANSMISSION LINES.