Classification
301 - Sociology & anthropology
610 - Medicine & health
300 - Social sciences
11
333 - Economics of land & energy
10
100 - Philosophy & psychology
7
900 - History & geography
6
000 - Computer science, information & general works
4
320 - Political science
4
363 - Other social problems & services
3
370 - Education
3
600 - Technology
3
140 - Specific philosophical schools
2
330 - Economics
2
364 - Criminology
2
200 - Religion
1
340 - Law
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
398 - Folklore
1
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
1