Materia
HQ The family. Marriage. Woman
HN Social history and conditions. Social problems. Social reform
67
H Social Sciences (General)
32
HV Social pathology. Social and public welfare
31
HM Sociology
26
BF Psychology
20
K Law (General)
17
LB2300 Higher Education
15
RA0421 Public health. Hygiene. Preventive Medicine
12
L Education (General)
11
LC Special aspects of education
9
HT Communities. Classes. Races
8
R Medicine (General)
7
RA Public aspects of medicine
7
JA Political science (General)
5
RJ101 Child Health. Child health services
5
LB1501 Primary Education
4
QP Physiology
4
RT Nursing
4
F1201 Latin America (General)
3
KZ Law of Nations
3
LC5201 Education extension. Adult education. Continuing education
3
B Philosophy (General)
2
HC Economic History and Conditions
2
HD Industries. Land use. Labor
2
J General legislative and executive papers
2
JC Political theory
2
LB1603 Secondary Education. High schools
2
NA Architecture
2
RC Internal medicine
2
G Geography (General)
1
GB Physical geography
1
GE Environmental Sciences
1
GN Anthropology
1
GV Recreation Leisure
1
HA Statistics
1
HB Economic Theory
1
HD28 Management. Industrial Management
1
HG Finance
1
HJ Public Finance
1
JF Political institutions (General)
1
JL Political institutions (America except United States)
1
JV Colonies and colonization. Emigration and immigration. International migration
1
M Music
1
NX Arts in general
1
PN0080 Criticism
1
PN0441 Literary History
1
QH Natural history
1
QL Zoology
1
RC0254 Neoplasms. Tumors. Oncology (including Cancer)
1
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