Materia
HN Social history and conditions. Social problems. Social reform
H Social Sciences (General)
100
HM Sociology
58
HV Social pathology. Social and public welfare
29
HQ The family. Marriage. Woman
19
HC Economic History and Conditions
17
JA Political science (General)
15
L Education (General)
15
HT Communities. Classes. Races
12
LB2300 Higher Education
12
HB Economic Theory
11
NA Architecture
11
K Law (General)
9
RA0421 Public health. Hygiene. Preventive Medicine
9
BF Psychology
7
HD Industries. Land use. Labor
7
HF Commerce
6
QP Physiology
5
F1201 Latin America (General)
4
HE Transportation and Communications
4
LC Special aspects of education
4
TD Environmental technology. Sanitary engineering
4
R Medicine (General)
3
RA Public aspects of medicine
3
ZA Information resources
3
D History (General)
2
GE Environmental Sciences
2
GF Human ecology. Anthropogeography
2
HJ Public Finance
2
JC Political theory
2
JV Colonies and colonization. Emigration and immigration. International migration
2
LB Theory and practice of education
2
LE Individual institutions (America except United States)
2
NX Arts in general
2
QR355 Virology
2
RT Nursing
2
S Agriculture (General)
2
T Technology (General)
2
B Philosophy (General)
1
E11 America (General)
1
G Geography (General)
1
GB Physical geography
1
GC Oceanography
1
GN Anthropology
1
GV Recreation Leisure
1
HA Statistics
1
HF5601 Accounting
1
HG Finance
1
HX Socialism. Communism. Anarchism
1
J General legislative and executive papers
1
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