%0 Journal Article %A Luis Javier Hernández-Paricio %T Fundamental pro-groupoids and covering projections %J Fundamenta Mathematicae %D 1998 %P 1-31 %V 156 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-156-1-1-31/ %R 10.4064/fm-156-1-1-31 %G en %F 10_4064_fm_156_1_1_31