Classification
333 - Economics of land & energy
330 - Economics
13
363 - Other social problems & services
12
700 - The arts; fine & decorative arts
12
000 - Computer science, information & general works
10
600 - Technology
10
620 - Engineering & allied operations
8
580 - Plants (Botany)
6
140 - Specific philosophical schools
5
320 - Political science
5
380 - Commerce, communications & transportation
4
551 - Geology, hydrology & meteorology
4
630 - Agriculture & related technologies
4
900 - History & geography
4
340 - Law
3
576 - Genetics & evolution
3
300 - Social sciences
2
304 - Factors affecting social behavior
2
610 - Medicine & health
2
658 - General management
2
370 - Education
1
400 - Language
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
581 - Specific topics in natural history
1
650 - Management & auxiliary services
1
657 - Accounting
1
720 - Architecture
1