%0 Journal Article %A Matthew I. Gould %A George Grätzer %T Boolean Extensions and Normal Subdirect Powers of Finite Universal Algebras. %J Mathematische Zeitschrift %D 1967 %P 16-25 %V 99 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1967__99_170760/ %F MZ_1967__99_170760