TY - JOUR AU - B. Rotman TI - A theorem on almost disjoint sets JO - Colloquium Mathematicum PY - 1971 SP - 1 EP - 2 VL - 24 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-24-1-1-2/ DO - 10.4064/cm-24-1-1-2 LA - en ID - 10_4064_cm_24_1_1_2 ER -