%0 Journal Article
%T Foreword to "The occurrence of revolutions"
%J Journal of abnormal psychology (1906)
%D 1918
%A Sidis, B.
%V 13
%N 4
%P 215-216
%X <p>[Abstract unavailable]</p>
%G 
%I Gorham Press
%@ 0145-2339
%U http://dx.doi.org/10.1037/h0070899