Materia
T Technology (General)
L Education (General)
70
LB2300 Higher Education
48
H Social Sciences (General)
44
HF Commerce
16
LC Special aspects of education
15
Q Science (General)
12
HB Economic Theory
11
TA Engineering (General). Civil engineering (General)
11
ZA Information resources
10
HD28 Management. Industrial Management
9
HM Sociology
9
HD Industries. Land use. Labor
8
HG Finance
8
LB Theory and practice of education
8
ZA4050 Electronic information resources
7
G Geography (General)
6
LC5201 Education extension. Adult education. Continuing education
6
S Agriculture (General)
6
BF Psychology
5
HC Economic History and Conditions
5
K Law (General)
5
R Medicine (General)
5
RA Public aspects of medicine
4
SF Animal culture
4
TC Hydraulic engineering. Ocean engineering
4
GE Environmental Sciences
3
HE Transportation and Communications
3
HF5601 Accounting
3
LB1603 Secondary Education. High schools
3
QA76 Computer software
3
RA0421 Public health. Hygiene. Preventive Medicine
3
TD Environmental technology. Sanitary engineering
3
BJ Ethics
2
HN Social history and conditions. Social problems. Social reform
2
JA Political science (General)
2
LE Individual institutions (America except United States)
2
P Philology. Linguistics
2
QL Zoology
2
RS Pharmacy and materia medica
2
RT Nursing
2
RZ Other systems of medicine
2
SB Plant culture
2
T201 Patents. Trademarks
2
TK Electrical engineering. Electronics Nuclear engineering
2
V Naval Science (General)
2
Z665 Library Science. Information Science
2
B Philosophy (General)
1
BC Logic
1
CD921 Archives
1
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