Classification
330 - Economics
363 - Other social problems & services
540 - Chemistry & allied sciences
600 - Technology
620 - Engineering & allied operations
7
700 - The arts; fine & decorative arts
333 - Economics of land & energy
3
630 - Agriculture & related technologies
3
580 - Plants (Botany)
2
610 - Medicine & health
2
100 - Philosophy & psychology
1
300 - Social sciences
1
301 - Sociology & anthropology
1
380 - Commerce, communications & transportation
1
658 - General management
1
900 - History & geography
1