Materia
L Education (General)
LB1501 Primary Education
LC Special aspects of education
13
H Social Sciences (General)
8
LB2300 Higher Education
8
LB Theory and practice of education
6
LB2361 Curriculum
6
BF Psychology
5
T Technology (General)
5
PN Literature (General)
4
LB1603 Secondary Education. High schools
3
LT Textbooks
3
QA Mathematics
3
HN Social history and conditions. Social problems. Social reform
2
HV Social pathology. Social and public welfare
2
HA Statistics
1
HB Economic Theory
1
HD Industries. Land use. Labor
1
HM Sociology
1
LC5201 Education extension. Adult education. Continuing education
1
N Visual arts (General) For photography, see TR
1
NA Architecture
1
P Philology. Linguistics
1
PE English
1
PN0441 Literary History
1
PZ Childrens literature
1
RA0421 Public health. Hygiene. Preventive Medicine
1
Z719 Libraries (General)
1