Classification
300 - Social sciences
301 - Sociology & anthropology
333 - Economics of land & energy
610 - Medicine & health
8
100 - Philosophy & psychology
5
900 - History & geography
4
000 - Computer science, information & general works
3
320 - Political science
3
370 - Education
3
600 - Technology
3
140 - Specific philosophical schools
1
200 - Religion
1
330 - Economics
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
364 - Criminology
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