Classification
410 - Linguistics
400 - Language
18
900 - History & geography
16
100 - Philosophy & psychology
11
320 - Political science
10
000 - Computer science, information & general works
8
700 - The arts; fine & decorative arts
8
780 - Music
8
380 - Commerce, communications & transportation
7
800 - Literature & rhetoric
7
500 - Natural sciences & mathematics
6
300 - Social sciences
5
330 - Economics
5
340 - Law
5
600 - Technology
5
333 - Economics of land & energy
4
370 - Education
4
140 - Specific philosophical schools
2
363 - Other social problems & services
2
620 - Engineering & allied operations
2
200 - Religion
1
580 - Plants (Botany)
1
610 - Medicine & health
1
630 - Agriculture & related technologies
1