%0 Journal Article %A . Redakcja %T Sprostowanie %J Didactica Mathematicae %D 1988 %P 260 %V 8 %N 01 %U http://geodesic.mathdoc.fr/articles/10.14708/dm.v8i01.6905/ %R 10.14708/dm.v8i01.6905 %G pl %F 10_14708_dm_v8i01_6905