Materia
H Social Sciences (General)
HN Social history and conditions. Social problems. Social reform
99
HM Sociology
82
L Education (General)
58
HF Commerce
45
T Technology (General)
44
K Law (General)
37
JA Political science (General)
36
HB Economic Theory
35
HG Finance
29
LB2300 Higher Education
29
HD28 Management. Industrial Management
26
HD Industries. Land use. Labor
24
HC Economic History and Conditions
21
GE Environmental Sciences
20
RA0421 Public health. Hygiene. Preventive Medicine
20
HJ Public Finance
18
HT Communities. Classes. Races
18
HV Social pathology. Social and public welfare
16
HF5601 Accounting
11
HQ The family. Marriage. Woman
11
BF Psychology
10
Q Science (General)
10
B Philosophy (General)
8
HE Transportation and Communications
8
D History (General)
7
GV Recreation Leisure
7
G Geography (General)
6
RA Public aspects of medicine
6
BJ Ethics
5
LC Special aspects of education
5
HA Statistics
4
NX Arts in general
4
GF Human ecology. Anthropogeography
3
LB Theory and practice of education
3
LB1501 Primary Education
3
M Music
3
NA Architecture
3
P Philology. Linguistics
3
PN Literature (General)
3
R Medicine (General)
3
TD Environmental technology. Sanitary engineering
3
ZA Information resources
3
BC Logic
2
BL Religion
2
CC Archaeology
2
E11 America (General)
2
F1201 Latin America (General)
2
J General legislative and executive papers
2
JF Political institutions (General)
2
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