Classification
320 - Political science
330 - Economics
580 - Plants (Botany)
2
600 - Technology
2
620 - Engineering & allied operations
2
658 - General management
700 - The arts; fine & decorative arts
2
720 - Architecture
900 - History & geography
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1