%0 Journal Article %A J. Płonka %T On the number of polynomials of a universal algebra, IV %J Colloquium Mathematicum %D 1972 %P 11-14 %V 25 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-25-1-11-14/ %R 10.4064/cm-25-1-11-14 %G en %F 10_4064_cm_25_1_11_14