HB - Economic Theory and Demography 32
HC - Economic History and Conditions 57
HD - Industries, Land Use, Labor 233
HE - Transportation and Communications 18
HF - Commerce 165
HG - Finance 45
HJ - Public Finance 3
HM - Sociology 148
HN - Social History and Conditions 15
HQ - Family, Marriage, Women 208
H - Social Science 7
HS - Societies 3
HT - Communities, Classes, Races 17
HV - Social Pathology, Criminology 90
HX - Socialism, Communism, Anarchism 8