Classification
370 - Education
62
371 - Schools & their activities; special education
51
006 - Special computer methods
24
005 - Computer programming, programs & data
15
004 - Data processing & computer science
11
378 - Higher education
10
300 - Social sciences
8
658 - General management
8
000 - Computer science, information & general works
7
333 - Economics of land & energy
7
600 - Technology
6
900 - History & geography
6
320 - Political science
5
418 - Standard usage & applied linguistics
5
500 - Natural sciences & mathematics
5
700 - The arts; fine & decorative arts
5
330 - Economics
4
374 - Adult education
4
507 - Education, research & related topics
4
616 - Diseases
4
621 - Applied physics
4
001 - Knowledge
3
003 - Systems
3
140 - Specific philosophical schools
3
301 - Sociology & anthropology
3
303 - Social processes
3
381 - Commerce
3
510 - Mathematics
3
620 - Engineering & allied operations
3
100 - Philosophy & psychology
2
302 - Social interaction
2
304 - Factors affecting social behavior
2
338 - Production
2
361 - Social problems & social welfare in general
2
372 - Elementary education
2
379 - Public policy issues in education
2
400 - Language
2
518 - Numerical analysis
2
610 - Medicine & health
2
745 - Decorative arts
2
025 - Library operations
1
027 - General libraries
1
037 - Encyclopedias in Slavic languages
1
153 - Mental processes & intelligence
1
158 - Applied psychology
1
306 - Culture & institutions
1
331 - Labor economics
1
360 - Social problems & services; associations
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
more ...