%0 Journal Article
%T Notes on two multiple-variable spot maps
%J Social forces
%D 1928
%A Schmid, Calvin F.
%V 6
%N 3
%P 378-382
%X <p>[Abstract unavailable]</p>
%G en
%I University of North Carolina Press
%@ 0037-7732
%U http://dx.doi.org/10.2307/3004856