Classification
380 - Commerce, communications & transportation
658 - General management
900 - History & geography
600 - Technology
17
620 - Engineering & allied operations
15
700 - The arts; fine & decorative arts
10
000 - Computer science, information & general works
7
330 - Economics
7
363 - Other social problems & services
7
333 - Economics of land & energy
5
370 - Education
5
610 - Medicine & health
4
720 - Architecture
4
140 - Specific philosophical schools
3
320 - Political science
3
576 - Genetics & evolution
3
400 - Language
2
410 - Linguistics
2
580 - Plants (Botany)
2
800 - Literature & rhetoric
2
100 - Philosophy & psychology
1
170 - Ethics
1
300 - Social sciences
1
340 - Law
1
780 - Music
1