Classification
418 - Standard usage & applied linguistics
297
370 - Education
42
430 - Germanic languages; German
27
306 - Culture & institutions
21
400 - Language
20
407 - Education, research & related topics
19
401 - Philosophy & theory
17
610 - Medicine & health
15
410 - Linguistics
14
374 - Adult education
11
371 - Schools & their activities; special education
10
404 - Special topics
8
304 - Factors affecting social behavior
5
372 - Elementary education
5
379 - Public policy issues in education
5
490 - Other languages
5
624 - Civil engineering
5
808 - Rhetoric & collections of literature
5
300 - Social sciences
4
700 - The arts; fine & decorative arts
4
303 - Social processes
3
333 - Economics of land & energy
3
378 - Higher education
3
414 - Phonology & phonetics
3
618 - Gynecology, obstetrics, pediatrics & geriatrics
3
800 - Literature & rhetoric
3
100 - Philosophy & psychology
2
140 - Specific philosophical schools
2
301 - Sociology & anthropology
2
302 - Social interaction
2
507 - Education, research & related topics
2
510 - Mathematics
2
600 - Technology
2
616 - Diseases
2
000 - Computer science, information & general works
1
149 - Other philosophical systems
1
153 - Mental processes & intelligence
1
200 - Religion
1
332 - Financial economics
1
380 - Commerce, communications & transportation
1
417 - Dialectology & historical linguistics
1
440 - Romance languages; French
1
492 - Afro-Asiatic languages; Semitic languages
1
500 - Natural sciences & mathematics
1
550 - Earth sciences
1
612 - Human physiology
1
617 - Surgery & related medical specialties
1
620 - Engineering & allied operations
1
621 - Applied physics
1
690 - Buildings
1
more ...