Classification
140 - Specific philosophical schools
2
330 - Economics
333 - Economics of land & energy
2
370 - Education
700 - The arts; fine & decorative arts
2
320 - Political science
1
363 - Other social problems & services
1
600 - Technology
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
720 - Architecture
1
900 - History & geography
1