%0 Journal Article %A Karol Borsuk %T Concerning the Euler characteristic of normal spaces %J Colloquium Mathematicum %D 1947 %P 206-209 %V 1 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-1-3-206-209/ %R 10.4064/cm-1-3-206-209 %G en %F 10_4064_cm_1_3_206_209