Classification
140 - Specific philosophical schools
700 - The arts; fine & decorative arts
21
000 - Computer science, information & general works
15
600 - Technology
13
330 - Economics
12
610 - Medicine & health
11
363 - Other social problems & services
10
370 - Education
8
333 - Economics of land & energy
7
320 - Political science
6
380 - Commerce, communications & transportation
6
620 - Engineering & allied operations
6
400 - Language
4
576 - Genetics & evolution
4
900 - History & geography
4
300 - Social sciences
3
304 - Factors affecting social behavior
3
551 - Geology, hydrology & meteorology
3
580 - Plants (Botany)
3
612 - Human physiology
3
658 - General management
3
720 - Architecture
3
340 - Law
2
410 - Linguistics
2
500 - Natural sciences & mathematics
2
630 - Agriculture & related technologies
2
100 - Philosophy & psychology
1
160 - Logic
1
540 - Chemistry & allied sciences
1
581 - Specific topics in natural history
1
657 - Accounting
1
780 - Music
1
800 - Literature & rhetoric
1