process of diffusion of a coloured substance into and through a film from beneath, this producing an undesirable staining or colour change
proces difuzije obojene supstance u film i kroz film odozdo, čime se stvaraju nepoželjne mrlje ili promena boje
proces difuzije obojene supstance u film i kroz film odozdo, čime se stvaraju nepoželjne mrlje ili promena boje
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