HQ - Family, Marriage, Women 156
H - Social Science 115
HD - Industries, Land Use, Labor 110
HC - Economic History and Conditions 109
HT - Communities, Classes, Races 78
HN - Social History and Conditions 70
HF - Commerce 58
HV - Social Pathology, Criminology 35
HM - Sociology 26
HE - Transportation and Communications 25
HG - Finance 21
HB - Economic Theory and Demography 19
HX - Socialism, Communism, Anarchism 17
HJ - Public Finance 14
HS - Societies 8
HA - Statistics 5