%0 Journal Article %A Murre, Jaap P. %T On contravariant functors from the category of preschemes over a field into the category of abelian groups %J Publications Mathématiques de l'IHÉS %D 1964 %P 5-43 %V 23 %I Institut des Hautes Études Scientifiques %G en %F PMIHES_1964__23__5_0