Classification
320 - Political science
363 - Other social problems & services
700 - The arts; fine & decorative arts
900 - History & geography
600 - Technology
20
333 - Economics of land & energy
19
620 - Engineering & allied operations
17
330 - Economics
16
380 - Commerce, communications & transportation
13
000 - Computer science, information & general works
12
581 - Specific topics in natural history
11
140 - Specific philosophical schools
10
720 - Architecture
10
551 - Geology, hydrology & meteorology
9
370 - Education
7
340 - Law
6
610 - Medicine & health
5
100 - Philosophy & psychology
4
576 - Genetics & evolution
4
580 - Plants (Botany)
4
170 - Ethics
3
200 - Religion
3
500 - Natural sciences & mathematics
3
400 - Language
2
414 - Phonology & phonetics
2
630 - Agriculture & related technologies
2
658 - General management
2
300 - Social sciences
1
360 - Social problems & services; associations
1
550 - Earth sciences
1
780 - Music
1
791 - Public performances
1
800 - Literature & rhetoric
1