%0 Journal Article %A Piet Borst %T Classification of weakly infinite-dimensional spaces. Part II: Essential mappings %J Fundamenta Mathematicae %D 1988 %P 73-99 %V 130 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-130-2-73-99/ %R 10.4064/fm-130-2-73-99 %G en %F 10_4064_fm_130_2_73_99