Materia
T Technology (General)
L Education (General)
143
LB2300 Higher Education
97
H Social Sciences (General)
61
LC Special aspects of education
33
Q Science (General)
20
HF Commerce
19
TA Engineering (General). Civil engineering (General)
18
ZA Information resources
18
ZA4050 Electronic information resources
18
LB Theory and practice of education
16
R Medicine (General)
15
HD Industries. Land use. Labor
14
HD28 Management. Industrial Management
14
HB Economic Theory
13
LC5201 Education extension. Adult education. Continuing education
12
S Agriculture (General)
12
G Geography (General)
11
HG Finance
11
HM Sociology
9
LB1603 Secondary Education. High schools
9
QA76 Computer software
9
LB2361 Curriculum
8
K Law (General)
7
LB1501 Primary Education
7
QA75 Electronic computers. Computer science
7
RT Nursing
7
BF Psychology
6
GE Environmental Sciences
6
HF5601 Accounting
6
RA Public aspects of medicine
6
SF Animal culture
6
Z665 Library Science. Information Science
6
HC Economic History and Conditions
5
NA Architecture
5
RA0421 Public health. Hygiene. Preventive Medicine
5
SB Plant culture
5
HE Transportation and Communications
4
P Philology. Linguistics
4
QA Mathematics
4
TC Hydraulic engineering. Ocean engineering
4
TD Environmental technology. Sanitary engineering
4
TK Electrical engineering. Electronics Nuclear engineering
4
BJ Ethics
3
CD921 Archives
3
HA Statistics
3
HN Social history and conditions. Social problems. Social reform
3
HV Social pathology. Social and public welfare
3
JA Political science (General)
3
NX Arts in general
3
más ...