%0 Journal Article %A B. V. Rao %T On Borel structures %J Colloquium Mathematicum %D 1970 %P 199-204 %V 21 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-21-2-199-204/ %R 10.4064/cm-21-2-199-204 %G fr %F 10_4064_cm_21_2_199_204