Classification
370 - Education
610 - Medicine & health
11
330 - Economics
9
333 - Economics of land & energy
8
700 - The arts; fine & decorative arts
8
620 - Engineering & allied operations
7
900 - History & geography
7
576 - Genetics & evolution
5
600 - Technology
5
000 - Computer science, information & general works
4
500 - Natural sciences & mathematics
4
100 - Philosophy & psychology
3
140 - Specific philosophical schools
3
361 - Social problems & social welfare in general
3
300 - Social sciences
2
340 - Law
2
372 - Elementary education
2
400 - Language
2
580 - Plants (Botany)
2
658 - General management
2
720 - Architecture
2
153 - Mental processes & intelligence
1
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
320 - Political science
1
363 - Other social problems & services
1
371 - Schools & their activities; special education
1
380 - Commerce, communications & transportation
1
410 - Linguistics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
616 - Diseases
1
630 - Agriculture & related technologies
1
745 - Decorative arts
1
780 - Music
1