TY - JOUR AU - J. Dukarm TI - Weakly monadic Boolean extension functors JO - Fundamenta Mathematicae PY - 1980 SP - 75 EP - 90 VL - 110 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm-110-2-75-90/ DO - 10.4064/fm-110-2-75-90 LA - en ID - 10_4064_fm_110_2_75_90 ER -