Classification
700 - The arts; fine & decorative arts
15
600 - Technology
14
333 - Economics of land & energy
11
330 - Economics
10
380 - Commerce, communications & transportation
8
000 - Computer science, information & general works
7
900 - History & geography
7
363 - Other social problems & services
6
500 - Natural sciences & mathematics
6
610 - Medicine & health
6
658 - General management
6
370 - Education
5
410 - Linguistics
4
620 - Engineering & allied operations
4
720 - Architecture
4
140 - Specific philosophical schools
3
320 - Political science
3
551 - Geology, hydrology & meteorology
3
576 - Genetics & evolution
3
340 - Law
2
580 - Plants (Botany)
2
657 - Accounting
2
100 - Philosophy & psychology
1
300 - Social sciences
1
400 - Language
1
581 - Specific topics in natural history
1
780 - Music
1