Materia
G Geography (General)
H Social Sciences (General)
HN Social history and conditions. Social problems. Social reform
4
HT Communities. Classes. Races
3
JA Political science (General)
3
GF Human ecology. Anthropogeography
2
GN Anthropology
2
GR Folklore
2
GT Manners and customs
2
HM Sociology
2
E11 America (General)
1
GA Mathematical geography. Cartography
1
GB Physical geography
1
GE Environmental Sciences
1
HC Economic History and Conditions
1
HV Social pathology. Social and public welfare
1
P Philology. Linguistics
1