HF - Commerce 36
HD - Industries, Land Use, Labor 27
HV - Social Pathology, Criminology 6
HG - Finance 5
H - Social Science 4
HM - Sociology 4
HC - Economic History and Conditions 3
HQ - Family, Marriage, Women 3
HB - Economic Theory and Demography 2
HE - Transportation and Communications 2
HJ - Public Finance 1
HN - Social History and Conditions 1