%0 Journal Article %A B. Węglorz %T Substructures of reduced powers %J Fundamenta Mathematicae %D 1975 %P 191-197 %V 89 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-89-3-191-197/ %R 10.4064/fm-89-3-191-197 %G en %F 10_4064_fm_89_3_191_197