%0 Journal Article %A Isbell, John R. %T A Note on Exact Colimits %J Canadian mathematical bulletin %D 1968 %P 569-572 %V 11 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1968-068-7/ %R 10.4153/CMB-1968-068-7 %F 10_4153_CMB_1968_068_7