Classification
140 - Specific philosophical schools
300 - Social sciences
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
330 - Economics
333 - Economics of land & energy
1
363 - Other social problems & services
1
600 - Technology
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1