Materia
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LB1603 Secondary Education. High schools
78
LB2300 Higher Education
373
LB2361 Curriculum
101
LC Special aspects of education
278
LC5201 Education extension. Adult education. Continuing education
44
LE Individual institutions (America except United States)
14
LT Textbooks
13
M Music
19
ML Literature of music
2
MT Musical instruction and study
7
N Visual arts (General) For photography, see TR
3
NA Architecture
8
NC Drawing Design Illustration
3
ND Painting
1
NK Decorative arts Applied arts Decoration and ornament
1
NX Arts in general
25
P Philology. Linguistics
32
PA Classical philology
1
PC Romance languages
1
PE English
32
PJ Semitic
1
PN Literature (General)
28
PN0080 Criticism
1
PN0441 Literary History
2
PS American literature
1
PZ Childrens literature
1
Q Science (General)
22
QA Mathematics
38
QA75 Electronic computers. Computer science
1
QA76 Computer software
5
QC Physics
6
QD Chemistry
9
QH Natural history
1
QH301 Biology
6
QH426 Genetics
2
QK Botany
4
QL Zoology
9
QP Physiology
1
QR Microbiology
2
QR180 Immunology
1
QR355 Virology
2
R Medicine (General)
26
RA Public aspects of medicine
15
RA0421 Public health. Hygiene. Preventive Medicine
19
RB Pathology
3
RC Internal medicine
2
RC0254 Neoplasms. Tumors. Oncology (including Cancer)
1
RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
1
RG Gynecology and obstetrics
1
RJ Pediatrics
2
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