Classification
320 - Political science
330 - Economics
370 - Education
380 - Commerce, communications & transportation
600 - Technology
658 - General management
333 - Economics of land & energy
2
620 - Engineering & allied operations
2
700 - The arts; fine & decorative arts
2
900 - History & geography
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
300 - Social sciences
1
340 - Law
1
363 - Other social problems & services
1
400 - Language
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
610 - Medicine & health
1
720 - Architecture
1
780 - Music
1