PAPEL Y CARTON. DETERMINACION DEL FACTOR DE REFLECTANCIA EN EL AZUL (GRADO DE BLANCURA UNE)
PAPER AND CARDBOARD. DETERMINATION OF REFLECTANCE FACTOR IN BLUE (DEGREE OF WHITENESS UNE)
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CTN 57 - Cellulose and paper
It is cancelled by: UNE 57062:1994
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