TY - JOUR AU - B. V. Rao TI - Lattice of Borel structures JO - Colloquium Mathematicum PY - 1971 SP - 213 EP - 216 VL - 23 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-23-2-213-216/ DO - 10.4064/cm-23-2-213-216 LA - en ID - 10_4064_cm_23_2_213_216 ER -