Classification
300 - Social sciences
380 - Commerce, communications & transportation
700 - The arts; fine & decorative arts
140 - Specific philosophical schools
10
330 - Economics
8
333 - Economics of land & energy
8
363 - Other social problems & services
8
620 - Engineering & allied operations
8
000 - Computer science, information & general works
7
610 - Medicine & health
7
900 - History & geography
7
600 - Technology
6
320 - Political science
5
576 - Genetics & evolution
5
580 - Plants (Botany)
5
340 - Law
4
370 - Education
4
400 - Language
4
500 - Natural sciences & mathematics
4
581 - Specific topics in natural history
4
100 - Philosophy & psychology
3
301 - Sociology & anthropology
3
414 - Phonology & phonetics
3
540 - Chemistry & allied sciences
3
551 - Geology, hydrology & meteorology
3
612 - Human physiology
3
630 - Agriculture & related technologies
3
658 - General management
3
170 - Ethics
2
410 - Linguistics
2
720 - Architecture
2
780 - Music
2
791 - Public performances
2
800 - Literature & rhetoric
2
304 - Factors affecting social behavior
1
530 - Physics
1
650 - Management & auxiliary services
1
657 - Accounting
1