%0 Journal Article %A Darrell W. Hajek %A Richard G. Wilson %T The Non-Simplicity of Certain Categories of Topological Spaces. %J Mathematische Zeitschrift %D 1973 %P 357-360 %V 131 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1973__131_171903/ %F MZ_1973__131_171903