TY  - JOUR
AU  - Drbohlav, Karel
TI  - A categorical generalization of a theorem of G. Birkhoff on primitive classes of universal algebras
JO  - Commentationes Mathematicae Universitatis Carolinae
PY  - 1965
SP  - 21
EP  - 41
VL  - 06
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMUC_1965__6_1_a4/
LA  - en
ID  - CMUC_1965__6_1_a4
ER  -