Classification
330 - Economics
363 - Other social problems & services
380 - Commerce, communications & transportation
576 - Genetics & evolution
600 - Technology
700 - The arts; fine & decorative arts
900 - History & geography
320 - Political science
2
333 - Economics of land & energy
2
620 - Engineering & allied operations
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
300 - Social sciences
1
658 - General management
1
720 - Architecture
1