Classification
000 - Computer science, information & general works
2
300 - Social sciences
2
320 - Political science
2
700 - The arts; fine & decorative arts
2
720 - Architecture
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
323 - Civil & political rights
1
330 - Economics
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
600 - Technology
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
900 - History & geography
1