H - Social Science 797
HA - Statistics 250
HB - Economic Theory and Demography 2,454
HC - Economic History and Conditions 4,311
HD - Industries, Land Use, Labor 13,970
HE - Transportation and Communications 848
HF - Commerce 6,537
HG - Finance 4,120
HJ - Public Finance 674
HM - Sociology 3,195
HN - Social History and Conditions 2,038
HQ - Family, Marriage, Women 9,947
HS - Societies 87
HT - Communities, Classes, Races 1,826
HV - Social Pathology, Criminology 10,043
HX - Socialism, Communism, Anarchism 705