Classification
000 - Computer science, information & general works
140 - Specific philosophical schools
320 - Political science
600 - Technology
700 - The arts; fine & decorative arts
16
330 - Economics
10
333 - Economics of land & energy
9
363 - Other social problems & services
8
380 - Commerce, communications & transportation
8
620 - Engineering & allied operations
6
900 - History & geography
5
200 - Religion
4
551 - Geology, hydrology & meteorology
4
610 - Medicine & health
4
100 - Philosophy & psychology
3
300 - Social sciences
3
361 - Social problems & social welfare in general
3
370 - Education
3
720 - Architecture
3
301 - Sociology & anthropology
2
340 - Law
2
581 - Specific topics in natural history
2
630 - Agriculture & related technologies
2
120 - Epistemology, causation & humankind
1
170 - Ethics
1
304 - Factors affecting social behavior
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
657 - Accounting
1
658 - General management
1