TY - JOUR AU - Holland, W. Charles TI - Varieties of $l$-groups are torsion classes JO - Czechoslovak Mathematical Journal PY - 1979 SP - 11 EP - 12 VL - 29 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1979.101573/ DO - 10.21136/CMJ.1979.101573 LA - en ID - 10_21136_CMJ_1979_101573 ER -