%0 Journal Article %A McCandless, Byron H. %T Retracts and extension spaces for perfectly normal spaces - II %J Portugaliae mathematica %D 1963 %P 205-207 %V 22 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1963__22_4_114910/ %G en %F PORMA_1963__22_4_114910