TY - JOUR AU - James Keesling TI - Open and closed mappings and compactification JO - Fundamenta Mathematicae PY - 1969 SP - 73 EP - 81 VL - 65 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm-65-1-73-81/ DO - 10.4064/fm-65-1-73-81 LA - en ID - 10_4064_fm_65_1_73_81 ER -