TY - JOUR AU - S. Lajos TI - On semigroups that are semilattices of left groups JO - Matematic̀Œki vesnik PY - 1974 SP - 125 VL - 26 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MV_1974_26_1_a16/ ID - MV_1974_26_1_a16 ER -