TY - JOUR AU - Jan Waszkiewicz TI - $∀_n$-theories of Boolean algebras JO - Colloquium Mathematicum PY - 1974 SP - 173 EP - 175 VL - 30 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-30-2-173-175/ DO - 10.4064/cm-30-2-173-175 LA - en ID - 10_4064_cm_30_2_173_175 ER -