HE - Transportation and Communications 14,969
HD - Industries, Land Use, Labor 4,579
HQ - Family, Marriage, Women 2,519
HF - Commerce 2,383
HV - Social Pathology, Criminology 2,142
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HC - Economic History and Conditions 1,224
HM - Sociology 1,018
HG - Finance 936
L - General Education 779
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