Classification
301 - Sociology & anthropology
330 - Economics
333 - Economics of land & energy
363 - Other social problems & services
2
610 - Medicine & health
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
300 - Social sciences
1
540 - Chemistry & allied sciences
1
600 - Technology
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
1