Paper and board intended to come into contact with foodstuffs; determination of the fastness of fluorescent whitened paper and board; German version EN 648:1993— 4 стр.
Paper and board intended to come into contact with foodstuffs - Determination of the fastness of fluorescent whitened paper and board; German version EN 648:2003— 9 стр.
Paper and board intended to come into contact with foodstuffs - Determination of the fastness of fluorescent whitened paper and board; German version EN 648:2003— 9 стр.