%0 Journal Article %A K.D. jr. Magill %T Embedding semigroups into semigroups with countability index two. %J Semigroup forum %D 1989 %P 51-58 %V 39 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1989__39_2_134973/ %F SF_1989__39_2_134973