Classification
363 - Other social problems & services
581 - Specific topics in natural history
333 - Economics of land & energy
14
320 - Political science
12
330 - Economics
8
340 - Law
7
700 - The arts; fine & decorative arts
7
600 - Technology
6
551 - Geology, hydrology & meteorology
5
100 - Philosophy & psychology
4
300 - Social sciences
4
610 - Medicine & health
4
140 - Specific philosophical schools
3
630 - Agriculture & related technologies
3
900 - History & geography
3
200 - Religion
2
576 - Genetics & evolution
2
620 - Engineering & allied operations
2
000 - Computer science, information & general works
1
170 - Ethics
1
301 - Sociology & anthropology
1
350 - Public administration & military science
1
370 - Education
1
540 - Chemistry & allied sciences
1
658 - General management
1
800 - Literature & rhetoric
1