%0 Journal Article %A Harris, Douglas %T An Internal Characterization of Realcompactness %J Canadian journal of mathematics %D 1971 %P 439-444 %V 23 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1971-046-4/ %R 10.4153/CJM-1971-046-4 %F 10_4153_CJM_1971_046_4