TY - JOUR AU - Rosický, Jiří TI - Model theoretic approach to concrete categories JO - Commentationes Mathematicae Universitatis Carolinae PY - 1979 SP - 192 EP - 193 VL - 20 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_1979__20_1_a20/ LA - en ID - CMUC_1979__20_1_a20 ER -