%0 Journal Article
%A N. Freytag
%T A statistical study of their social and economic differences -  Moser, C.A.; Scott, Wolf
%J Metrika
%D 1962
%P 219-220
%V 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MET_1962__5_175161/
%F MET_1962__5_175161